Aside from malware and viruses, nothing has the potential to be more dangerous to your computer’s health than power outages. Here is how to ensure your computer keeps it boot on when a power failure turns the lights off.
With the approach of the turbulent summer season, it is important to know what kills the electrical lifeline, how to safeguard your digital gear from fatal reboot disease, and how to reach the desktop when the computer refuses to restart. This knowledge is vital whether you use computers to do your job in a business office or your own home office environment.
To minimize the potential damage from electrical power fluctuations, you should have your computers and modems plugged directly into power surge protective strips. Surge protectors are effective protection against glitches due to normally fluctuating energy levels.
However, a direct lightning strike is likely to fry the surge protector and then burn out the electronic gadgets plugged into it. A good strategy is to unplug the surge protector from the electric wall socket when a storm arrives.
Another essential piece of protective equipment is an uninterruptible power supply, or UPS. A UPS is a sophisticated battery-containing device that supplies backup power to desktop PCs during electrical grid outages and brownouts. One of the most important services a UPS can deliver is continuation of the electrical power — usually about 15 minutes — giving you enough time to safely save your data and power down your equipment. The UPS will kick in when its sensors detect an interruption of electricity from the main service line to your home or office.
The latest UPS models can reset to an off position automatically as their rechargeable batteries run out of energy. When the normal power supply returns, your computer can restart without its power supply being blocked if it is so configured. The BIOS settings in many computers let you adjust the power settings so the computer senses when normal electrical supply returns. You can pick up a UPS at office supply retailers and box stores, as well as your favorite online shopping center.
The software that comes with it safeguards the computer when it is unattended. This is useful if you use remote access services and file-syncing cloud storage services. Getting your PC to restart automatically after a power outage involves getting the computer to “see” the power returning by making some changes to the PC’s BIOS settings and installing the UPS-included software. Read on to learn how to do this.
What Breaks the Power
Causes of power outages involve some obvious and a few subtle situations. Mother Nature, device fatigue and dumb luck all figure into the power breakdown equation. Other than being prepared before trouble strikes, there is little you can do when the power grid fails. Here is a quick list of power failure causes:
- Weather — Lightning, high winds and ice are weather hazards that often impact the power supply. Interruptions can last several days, depending on how rapidly ground conditions improve to let work crews find and repair the damage. Lightning can strike equipment or trees, causing them to fall into electrical lines and equipment.
- Severe distress — Earthquakes of all sizes and hurricanes can damage electrical facilities and power lines. This sometimes catastrophic damage can cause long-term power outages.
- Equipment failure — Even when the weather is not a primary cause of a power outage, faulty equipment in the electrical system can be a primary cause of outages. Hardware breakdowns result from failure due to age, performance and other factors. Sometimes, adverse weather, such as lightning strikes, can weaken equipment. High demands on the electrical grid also can cause overloads and faults that make equipment more susceptible to failure over time.
- Wildlife — Small creatures have an uncanny knack for squeezing into places they do not belong in search of food or warmth. When squirrels, snakes and birds come into contact with equipment such as transformers and fuses, they can cause equipment to fail momentarily or shut down completely.
- Trees — Weather can be a secondary contributor, causing circumstances that can lead to power outages when trees interfere with power lines. During high winds and ice storms, tree limbs or entire trees can come into contact with poles and power lines.
- Public damage — Accidents happen. Vehicle accidents or construction equipment can cause broken utility poles, downed power lines and equipment damage. Excavation digging is another cause of power loss when underground cables are disturbed.
- Tracking — When dust accumulates on the insulators of utility poles and then combines with light moisture from fog or drizzle, it turns dust into a conductor. This causes equipment to fail.
- Momentary circuit interruptions — Blinks, or short-duration interruptions, are annoying. However, they serve a valuable purpose by shutting off the flow of electricity briefly to prevent a longer power outage when an object comes in contact with electric lines, causing a fault. If power surge strips (not multi-socket power strips) are not attached to your computer gear, the sudden loss of electricity and then a surge of power can cause data loss or component failure.
Dealing With It
You can not prevent the power grid from going down, but you can takes steps to ensure that it does not take your computer down with it. You also can learn what to do if your computer refuses to boot up to the desktop once the power returns.
First, before trouble strikes, make sure you set the BIOS switches to enable your computer to restart after a power interruption. The BIOS circuits are hardwired to the computer’s motherboard. You must establish the restart settings when there is no loss of electricity. You must be able to start the computer to reach the BIOS controls.
A D V E R T I S E M E N T
Just how you get there depends on the make and model of your computer. The BIOS restart setting is operating system-independent. It does not matter whether you run Microsoft Windows or Linux as the operating system of choice. The BIOS is responsible for “bootstrapping” the computer hardware and telling it to begin the startup process that leads to your desktop.
Adjusting the Dials
Here is how to set your computer’s BIOS to start automatically after power outage.
- Power On your computer and press “DEL” or “F1” or “F2” or “F10” to enter the BIOS (CMOS) setup utility. The way to enter into BIOS Settings depends on the computer manufacturer. Watch for a message in tiny print along the bottom edge of the screen when it first turns on.
- Inside the BIOS menu, look under the “Advanced” or “ACPI” or “Power Management Setup” menus* for a setting named “Restore on AC/Power Loss” or “AC Power Recovery” or “After Power Loss.”
*Note: The “Restore on AC/Power Loss” setting can be found under different places inside BIOS setup according to computer manufacturer.
- Set the “Restore on AC/Power Loss” setting to “Power On.”
- Save and exit from BIOS settings. (The menu on the screen will give you the function key combination to do this.)
If you use a Linux-powered computer as a server, it probably is essential for you to get it up and running as soon as the power comes back on. The server might be located in a less accessible part of the building.
You can select additional settings to ensure an unattended restart after a power interruption. There are four places where you have to set things up to continue without human intervention:
- BIOS: Make sure that the BIOS is set up to boot when power resumes.
- Boot loader: Set up the boot loader to not wait for a user to select what OS to boot. Boot into the default OS right away.
- Login: Set up the boot procedure to log in to a particular user automatically after boot. Do not wait for a person to log in.
- Application restart: Set up the boot procedure to start the application programs automatically without human intervention.
Set Up Auto-Restart
Some computers have a BIOS option that prepares the computer to restart more easily when failed power is restored. You need to check ahead of time to verify that your computer has this feature and it is activated.
Here is how to do this:
- Open your computer’s BIOS settings menu. This is a hardware-dependent process that works fairly similar on all computers whether you boot into Windows or Linux. Restart the computer and watch for the first flash-screen to appear.
- Look for the Setup function key description. It will be “Setup F2” or F12, or something similar. Restart the computer and at the same time press the appropriate function key. Tap the key repeatedly during this initial startup period and the BIOS Settings menu will appear.
- Look for the Power Settings menu item within the BIOS and change the AC Power Recovery or similar setting to “On.” Look for a power-based setting that affirms that the PC will restart when power becomes available. Some older PCs lack this functionality. If your gear has it, save the configuration by pressing the designated function key as displayed on the screen. This reboots the computer.
If you are using a UPS to provide a short-interval battery supply when the power outage occurs, see the additional steps below to make the hardware connections. Meanwhile, let’s focus on how to restart computers when the power grid is back online.
Get Windows 10 to Start Again
After a power outage, your Windows system may not boot or restart properly. Any attempt to boot the system could bring you to a stalled loading screen or a blue screen with an error message.
Windows 11 users see: How To Configure Windows To Auto Restart After a Power Failure
Power surges are a common cause of booting issues with Windows. The sudden loss of power can corrupt system files. These suggestions may help you get around that problem.
- Start Windows 10 in Safe Mode.
- Press the power on button on the computer.
- Press Windows logo key + I on your keyboard to open Settings.
- Select Update & Security > Recovery.
- Under Advanced startup, select Restart now.
- After your PC restarts to the Choose an option screen, select: Troubleshoot > Advanced options > Startup Settings > Restart.
- After your PC restarts, select an option to finish the process.
- Here is a second method to restart Windows 10 after a power outage. Use the built-in System Configuration Utility
- From the Win+X Menu, open Run box and type msconfig; then and hit the Enter key.
- Under the Boot tab, check the Safe boot and Minimal options. Click Apply/OK and exit.
When the computer restarts, it will automatically enter Safe Mode. It will continue to boot into Safe Mode until you change the setting back to normal boot.See Also5 Goat Fencing Options And Details To Consider • InsteadingYour Ultimate Guide on How to Write an Ultimate Guide (Infographic) | Express WritersPulsed Radiofrequency - Medical Clinical Policy BulletinsAn 'unholy trinity of bad things' are crippling the GOP's midterm hopes: political analyst
So before you shutdown Windows 10, open msconfig again and uncheck the Safe Boot check box; click Apply/OK, and then click the Restart button.
Get Windows 7 to Reboot
Each version of Microsoft Windows has a slightly different procedure to apply. If you have not yet upgraded to Windows 10, follow these steps to jump-start Windows 7.
- Press the power on button to attempt to restart the computer.
- Press F8 before the Windows 7 logo appears.
- At the Advanced Boot Options menu, select the Repair your computer option. Then press the Enter key.
Fix the Linux Boot Failure
Linux may be more able to fight off malware and viruses and such than Microsoft Windows. Still. it is no more immune to electrical surges and power grid outages than any other piece of electronic equipment.
The electricity issue attacks the hardware before it impacts the operating system by inadvertently corrupting Linux files. So you should make sure that your BIOS settings are enabled to restart after a wrongful shutdown when the power fails.
Follow the same steps detailed above for “adjusting the dials.” When trouble strikes, apply the steps outlined below to force your Linux-powered computer to restart into Safe Mode, which is actually a recovery mode.
The process with most Linux distributions can be a little different than with Windows-powered boxes. The process depends in large part on your computer hardware.
Some computers — especially those custom-made with Linux preinstalled — have a BIOS option called “fast boot” activated in the BIOS setup, which disables the F2 setup and F12 boot menu prompts.
This is something you will have to verify while the computer is still operational. In that case, power off your device and turn it back on. Hold down the F2 key (or whatever key combination is displayed on the screen).
Activate Safe/Recovery Mode in Linux
When you see the BIOS setup utility on the screen, disable “fast boot,” save the setting and reboot.
Using the “fast boot” option, the Linux OS, in essence, jumps into the startup routine by forcing the computer to run the Grand Unified Bootloader (GRUB) or GRUB 2 menu.
- Press the Computer’s power on/off button.
- Hold down the left Shift key as the computer starts to boot. If holding the Shift key doesn’t display the menu, press the ESC key repeatedly to display the GRUB 2 menu. Sometimes the SHIFT & ESC keys work instead.
From there you can choose the recovery option. Follow the on-screen directions to attempt to restart your Linux computer.
Use a Live CD Boot Repair Disk
Super Grub2 Disk and Rescatux are strong and reliable emergency boot solutions for Linux computers. Super Grub2’s stark interface makes it intimidating to use. Rescatux is far more user-friendly. Both are developed by the same source.
Super Grub2 Disk is a bit limited in its fix-and-go capabilities. If all you need is to bypass the problem and boot your failed system, it usually does the job. If you need a bona fide repair solution, use Rescatux.
The Rescatux emergency repair app is actually a live Linux distro CD environment. You can boot the dead computer from the CD/DVD (which you obviously must have created ahead of time).
Make the Hardware Connections
One of the major benefits of having a connected UPS is the ability to have the computer restart once the power supply resumes. The main things to look for when investigating which UPS to get are the initial cost, the cost of replacement batteries and the frequency with which you’ll have to replace them, the ability to manage and monitor the UPS from Linux, and the watts and volt-amps provided.
The batteries in a UPS degrade over time, resulting in a loss in its total power capacity. You might have to replace the batteries in the UPS in three to five years. If you only need to run a machine for five minutes and have the choice of a UPS that can run a machine for seven minutes or one that can give you 10, you can get away without replacing the batteries in the larger capacity UPS for a longer time — although the batteries for the larger UPS likely will be more expensive as well.
If you run the Linux OS, make sure the UPS you buy has software that supports Linux. If it does not, you will have to manually turn off the computers before the UPS’ batteries run out of juice.
Follow these steps to connect the UPS to your computer and peripherals such as printer and modem.
- Plug the PC and monitor into available controlled AC outlets on the UPS. Do not plug a power strip into the UPS socket first. Plug each hardware directly into its own UPS connection.
- Connect the included USB cable between UPS and PC. It is used for communications. Do not use a powered USB hub between UPS and PC or the lack of power during an outage will cause communications to fail.
- Plug the UPS into the wall power supply and allow it to charge. This takes four or more hours to charge fully.
Install and Configure the UPS Software if available. The directions will vary based on the UPS you have and the software that comes with it.
- Install the included software.
- Navigate to the Energy Management tab or similar within the Configuration setting.
- Check the Enable Energy Management check box and choose the Default settings in PowerChute. Look for any “Turn On Again” settings in any other power management software and check as appropriate.
A Few More Tips
With no endorsement intended, following is a list products to provide a starting point for purchasing a UPS or supporting software.
- PowerPanel for Linux is a simple command line Linux daemon to control a UPS system attached to a Linux-based computer. It provides all the functionality of PowerPanel Personal Edition software, including automatic shutdown, UPS monitoring, alert notifications, and more. PowerPanel for Linux is compatible with Fedora 23, Suse Enterprise 12 SP1, CentOS 7, Red Hat Enterprise 7.2, Ubuntu 15.10 and Debian 8.4.
- Apcupsd is a program for monitoring UPSes and performing a graceful computer shutdown in the event of a power failure. It runs on Linux, Mac OS X, Win32, BSD, Solaris and other OSes.
- Linux comes with GPL-licensed open source apcupsd server (daemon) that can be used for power management and controlling most of APC’s UPS models on Linux, BSD, Unix and MS-Windows operating systems. Apcupsd works with most of APC’s Smart-UPS models as well as most simple signaling models such a Back-UPS, and BackUPS-Office.
- WinPower is a UPS monitoring software that provides a user-friendly interface to provide power protection for computer systems encountering power failure.
Press Windows logo key + I on your keyboard to open Settings. Select Update & Security > Recovery. Under Advanced startup, select Restart now. After your PC restarts to the Choose an option screen, select: Troubleshoot > Advanced options > Startup Settings > Restart.Can I make my computer start up automatically? ›
- To access it, turn on the power of computer, press the "Delete" or "F2" key immediately during the boot process to enter BIOS advanced mode.
- Step 2: In the UEFI or BIOS settings screen, look for an option that will boot your PC on a schedule.
- Click on the Start menu and open the Settings option.
- Select Update & Security > Windows Update. You will see two options wherein the first one is a schedule chosen by your computer. The other option is for you to select a specific restart time.
What you do is unplugged the power cord of the unit for about 30 mins., then re-plugged again and see if the PC is working. Btw, be sure to reset the surge protector before plugging in the power cord from the unit. Usually there is a reset button on surge protector outlets on it's side.What happens if the power goes out while my PC is on? ›
If the power is shut down suddenly, it can cause a system crash in your PC. Your operating system, as well as other software that was running during the crash, may be damaged. If you don't manage to do a system repair, you might have to reinstall your operating system.Can power outages damage PC? ›
A sudden unexpected shutdown can affect system files. The corruption of a system file could severely damage your computer's software. Power outages don't just damage software, they can also cause accumulative damage to your hard drive.How do I turn on auto start? ›
How To Auto Launch Apps on Startup Windows 10 - YouTubeHow do I schedule my computer to shut down and start? ›
How to Schedule Windows 10 Shutdown and Startup - YouTubeHow can I turn on my computer without the power button? ›
- Shutdown the computer. ...
- Enter the BIOS password if prompted to do so. ...
- Move the cursor to the "Power Management" or "ACPI Management" option. ...
- Press the "+" or "-" key to change the "Wake on Keyboard" or "Power on by Keyboard" option value setting to "Enabled."
You can use the Task Scheduler to shutdown, restart or perform any action at one time or periodically. To do so, you may follow the steps below: 1. To make your computer shut down at a particular time, type taskschd.
Press the Down arrow key to highlight BIOS Power-On, and then press the Enter key to select. Press the Up and Down arrow keys to select the day. Then press the Right and Left arrow keys to change the settings. Select Enable to turn on the computer automatically on that day.Will Windows 10 restart when I shutdown my computer? ›
In the Shutdown settings section, uncheck the checkbox beside the Turn on fast startup (recommended) Click on save changes. This will disable fast startup on your computer, and the next time you shut your computer down, it will actually shut down for good and not restart on its own.Can a power outage damage a laptop? ›
Further to other answers, a power outage will have no effect on a laptop at all unless it's long enough for the battery to go flat. Unfortunately, in some cases, the outage is preceded by a power spike or surge, which may damage the charger, which, in turn, may possibly damage the circuitry inside the laptop.Can power outage damage GPU? ›
No not to the components you listed, loss of power on its own can cause hard drive damage, and data loss of course, but never damage components like GPU, CPU or motherboard on its own.Can a power surge damage a motherboard? ›
This is the most basic explanation of a power surge. Most power supply units and motherboards adjust their voltages to accommodate small power surges. But if it's a big one, it can fry your motherboard and all the components connected to it.Should I unplug my PC during a power outage? ›
It's strongly recommended that expensive electronics be unplugged during an outage to protect them from power surges when electricity is restored, but for when you can't unplug, surge protectors will help prevent damage to electronics like computers and televisions.What is the difference between a power surge and a power outage? ›
In simplest terms, a power outage is a loss of power while a power surge increases the voltage. A power surge may cause electronics or appliances to temporarily turn on and off. A power outage may cause appliances and electronics to turn off as well but probably for an extended period.Will a surge protector protect my PC? ›
Surge protectors are used to protect computer equipment from voltage surges and spikes caused by lightning strikes, power line noise, and other forms of electrical interference. Browse the top-ranked list of best surge protectors for gaming PC below along with associated reviews and opinions.Should I shut my PC down every night? ›
The short answer is no. The longer answer: It depends. Sleep mode overnight can be beneficial as it can allow it to perform any maintenance tasks scheduled — think full system virus scans, doing a full backup of the hard drive or checking for software updates, says Meister.How do you know if your computer is fried? ›
Random Characters on the Screen. If you start up your computer only to observe your display fill with random characters and halt, the motherboard -- or at least the video chip -- is probably fried. If you have a dedicated video card, however, reseat or replace it first in order to rule out an issue with the card alone.
As a general rule...it is probably smart to run the chkdsk /r or chkdsk /f command on the drive/partition reflecting Windows install after any abrupt shut down due to power outages, IMO. If there is any evidence of problems after that... I would run the DISM/sfc /scannow commands.What is Auto Start management? ›
The Android autostart management is used to ease you in starting your favorite applications on your device through one click. These types of applications make it easy for you to manage resources on your phone. The application allows you to pick one app that'll be launched whenever you reboot your device.What does autostart mean? ›
Android OS by default gives the capability to apps to start up automatically when you reboot the device.What is auto launch? ›
(transitive, intransitive) To launch automatically.How do you schedule a power off? ›
- Press the Start button on your taskbar or the Windows key on your keyboard to open the search box.
- Type schedule in the search box.
- Click on the Task Scheduler result to open the app.
- When Task Scheduler opens, click on Create Basic Task.
- Enter the name for your task, for example, Shutdown.
- Boot up your computer and enter your BIOS setup. ...
- Navigate to the Power Options. ...
- Enable that setting and set the time you want your computer to start every day.
In the advanced power settings, navigate to Sleep > Allow wake timers. Select Enable for both the On battery and Plugged in options. Click Apply and then click OK. From here, you can put your PC to sleep, and it'll auto-wake according to the time you've set.How do you wake up a computer without the power button? ›
To wake up a computer or the monitor from sleep or hibernate, move the mouse or press any key on the keyboard.How can I turn on my computer with my phone? ›
Open up the Shutdown Start Remote server on your PC (no need to install it) and then open up the app on your Android phone. If both devices are connected to the same network, then you should see your PC name in the Shutdown Start Remote app interface. Tap on it to connect to your PC.Can I turn on my computer with my keyboard? ›
How to Wake up ("Power On") a PC from the Keyboard (MSI ... - YouTube
Check Your Power Source
To test, remove any power strips, battery backups, or other power sources, and plug your computer directly into a wall outlet. If your computer starts after doing this, it means a surge may have fried whatever power source you were using and will need to be reset or replaced.
The motherboard may run in a sleep mode in which power continues to be supplied to the board. Any power surge may damage the system motherboard, which may cause numerous components to fail. Try unplugging the power cord from the back of your computer for 30 seconds.Should I unplug my PC during a power outage? ›
It's strongly recommended that expensive electronics be unplugged during an outage to protect them from power surges when electricity is restored, but for when you can't unplug, surge protectors will help prevent damage to electronics like computers and televisions.Why won't my PC turn on but has power? ›
To fix a Windows PC that won't turn on, first try ruling out a faulty power supply or outlet. You can also try checking for beep codes, display issues, unusual BIOS settings, or troubleshoot the PC in Safe Mode. Other fixes include disconnecting non-essential devices and checking for loose components and malware.Do power outages damage laptops? ›
Further to other answers, a power outage will have no effect on a laptop at all unless it's long enough for the battery to go flat. Unfortunately, in some cases, the outage is preceded by a power spike or surge, which may damage the charger, which, in turn, may possibly damage the circuitry inside the laptop.How can I test my computer after a power outage? ›
As a general rule...it is probably smart to run the chkdsk /r or chkdsk /f command on the drive/partition reflecting Windows install after any abrupt shut down due to power outages, IMO. If there is any evidence of problems after that... I would run the DISM/sfc /scannow commands.How do I fix Windows 10 after power outage? ›
1. Enter Windows Recovery Environment > Advanced Options > UEFI Firmware Settings to check if the startup disk is the system disk. 2. Enter Windows RE > Advanced Options > Automatic Repair to repair the system.How do I force my computer to start? ›
Force a restart
If the usual computer repair restart methods aren't working, you can force your computer to restart by holding down the power button until it shuts down, then pushing it again to start your machine. This should work.
How to Turn On any Laptop Without Power Button — 2022 - YouTubeHow do you reset a power supply? ›
Please note: To reset the power supply you need to turn it Off first (On/Off switch to “O” position) and then after waiting a short while, turn it back on again (On/Off switch to “I” position) If your power supply still does not function properly, you can check its functionality by yourself with a simple 'paperclip' ...
Answer. When you turn off a surge protector -- or suppressor, as some people call them -- it's virtually the same as unplugging it; it will save a small amount of energy and is a little safer in a storm than having the surge protector on.Should I unplug my washer and dryer when not in use? ›
Shutting off and unplugging all other appliances that won't be used while you're gone can reduce wasted energy. Many items — especially electronics — draw small amounts of electricity, even when they're not actively in use. This includes things like your washer, dryer, TV, coffee maker, microwave and fans.Can you unplug your PC every night? ›
Powering off your PC has minimal effects on it's performance and longevity. For older computers, regular shutdowns could affect the hard disk drive, but that's now a problem of the past. Today, it's better to switch your computer off each night to conserve power and reduce heat damage to internal components.How do you start a dead laptop? ›
How To Revive a Dead Laptop That Won't Turn On (Easy Fix) - YouTubeHow do I test a PC power supply? ›
- Shut off your PSU.
- Unplug all cables from the PSU except for the main AC cable and the 24-pin cable.
- Locate pin 16 and pin 17 on your 24-pin cable. ...
- Bend your paper clip so the ends can be inserted into pin 16 and pin 17. ...
- Turn on the PSU.
- See if the PSU fan turns.
PC Randomly Restarts or Shuts Down
During the startup or use of your PC, if it shuts down, PSU may be dead. If PC shutdown happens during the moments of high stress, for example, gaming or video encoding, you should be extremely vigilant. This occurs since the power supply cannot meet the demands of the computer.