How to Fix a Computer That Turns On and Then Off

If so, you could be facing anything from an electrical short to a serioushardwareproblem.

Troubleshoot the cause of the beep code, assuming you’re lucky enough to hear one.

Verify that the power supply voltage switch is set correctly.

Some computer cooling techniques for desktops require you toopen your gear, but that’s pretty easy to do.

Check for causes of electrical shortsinside your system.

Inspect the inside of your machine for problems that cause shorting.

Test your power supply.

Replace your power supply if it fails any of your tests.

This pause gives time for theCMOSbattery to charge a little.

Test the power button on the front of your machine’s case.

Replace the power button if it fails your testing or if you suspect it’s not working correctly.

Reseat theCPUonly if you suspect it might have come loose or wasn’t installed correctly.

It isn’t a big concern if you’re careful, so don’t worry!

Clear CMOSto erase theBIOSmemory and return its configs to their factory default levels.

A BIOS misconfiguration could be why your PC won’t start up normally.

If reseating the battery doesn’t fix the problem, considerreplacing the CMOS battery.

Start your PC with essential hardware only.

If your system turns on, and stays on, with essential hardware only, proceed to Step 11.

If your rig continues to turn off by itself, proceed to Step 12.

Reinstall each piece of non-essential hardware, one component at a time, testing your system after each installation.

Since your PC powered on with only the essential hardware installed, those components are working correctly.

It means that one of the devices you removed is causing your gear to turn off by itself.

Replace the faulty hardware once you’ve identified it.

Test your PC using aPower On Self Test card.

If you don’t already own and are unwilling topurchase a POST card, skip to Step 14.

Then test after each hardware replacement to determine which gadget is faulty.

Most average computer users don’t have a collection of working spare computer parts at their disposal.

Our advice is to revisit Step 12.

A POST card is not expensive and is a much more reasonable approach than stocking spare computer parts.

In these cases, you have little option but to rely on individuals or companies with these resources.

Why Does My Computer Turn Off?

Check the cables,clean your monitor, and take steps to keep it cool.

Tochange startup programs in Windows, openTask Managerand go to theStartuptab (orStartup appsin Windows 11).

Next, select theStatuscolumn to sort the applications into Disabled and Enabled.

To disable any tool, right-click anywhere in its row and selectDisable.

First,access to your Windows PC remotely.

Then, use theshutdown commandto turn it off.

After the power is completely off, turn on your PC to see if it will boot normally.