12 Tips to repair a computer that shows no sign of power

How to repair a computer that does not show any sign of power?

01. Before embarking on a time-consuming troubleshooting process, make sure that you have activated every power switch and power button connected to your computer system:

02. Check for computer power cable connections. A loose or disconnected power cord can cause a computer to malfunction

03. Connect your tablet, laptop, or desktop directly to a wall outlet. In other words, remove any power strips, battery backups, or other power distribution devices between the computer and the wall outlet.

If your computer starts to take power after doing this, something you removed from the equation is the cause of the problem. You will need to replace your surge protector or other power distribution devices. If all else fails, get your computer connected to the wall and keep debugging to keep things simple.

04, Perform a "lamp test" to verify power is being provided from the wall. Your computer won't turn on if it's not getting power, so you need to confirm that the power source is working correctly.

05 . Remove the main battery in the laptop or tablet and try using AC power only.

If your computer turns on after trying this, it means that your battery is the cause of the problem and you should replace it. Until you get it replaced, feel free to use your computer, so long as you're close to a power outlet!

06 . Carefully inspect the power receptacle on the laptop or tablet for damage. Check for broken/bent pins and bits of debris that might be preventing the computer from getting power and charging the battery.

07. Replace the computer's power cable or AC adapter. On a desktop, this is the power cable that runs between the computer case and the power source. The AC adapter for a tablet or laptop is the cable that you plug into the wall to charge your battery (it usually has a tiny light on it)

A bad AC adapter is a common reason why tablets and laptops won't turn on at all. Even if you don't regularly use the power cable, if it has failed, it means that it hasn't been charging your battery.

08 . Replace the CMOS battery, especially if your computer is more than a few years old or has spent a lot of time turned off or with the main battery removed. A bad CMOS battery is a relatively common cause of a computer that looks like it's not receiving power.

09. Confirm that the power switch is connected to the motherboard if using a Windows desktop. It's not a very common point of failure, but your PC might not be turning on because the power button isn't correctly connected to the motherboard.

10 If you are using a desktop computer, check your power supply. If your computer's power supply unit no longer works, you will need to replace it. However, you need to check and confirm it. It is very simple to test and there is no reason to replace a working piece of hardware

11. Test the power button on the front of your computer's case and replace it if it fails your testing. This step goes for desktop computers only.

12. Replace your motherboard if you're using a desktop. If you're confident that your wall power, power supply, and power button are working, there is likely a problem with your PC's motherboard, and you should replace it.