PC not powering on, motherboard light is on.

White10000

Commendable
Jan 31, 2017
1
0
1,510
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So I built this computer a handful of years ago now. After a recent move, (few months ago) I've started having problems.

First problem, PC kept turning itself on randomly when I was sleeping or at work. I'd just find it on BIOS menu.

Second problem, the randomly, it stopped outputting display to my monitors.

After resetting it started boot looping, at 10 second intervals, it would just restart, over and over until I cut power.

I tried to nail what was wrong by taking all parts out separately, switching them out for others, and couldn't find what work it out.

Ended up stripping the machine, thoroughly cleaning and putting all the components back in.

Few days later, it boots itself up to BIOS in my sleep, I restored defaults and it worked.

Worked fine for 3 days then all of a sudden, all USB ports stopped working, as the light on Keyboard and mouse are off. And the screen freezes.

I press the reset button. Hasn't powered up since.

I stripped the PC, made an out of the case build. Currently the Mobo, CPU, PSU and cooler are in front of me. Nothing will turn on. But there's a green light on the Mobo signalling that there is power coming from PSU.

Here are my specs:

MOBO: Asus ZB7-K
CPU: Intel i5 4th gen, 670k
PSU: Corsair RM 750 Gold
GPU: Nvidia GTX 660
RAM: Corsair Vengeance 1600MHZ DDR3
HDD: WD Green 2TB
OS: Windows 7

I use this for light gaming and programming. Most of the games I play are 5 years old at least. Honestly can't figure out what's wrong with it.

Perhaps its time for an upgrade maybe? Hoping to find a cost effective way to get this running again.

The hard drive works fine connected to an old PC, so my files are safe and I can get on with work. There's no rush to find a solution. It's just been frustrating me, can't figure it out.

Thanks for any help.
 

panathas

Honorable
Feb 12, 2014
1,103
12
12,665
301
First you have to make sure that your issues aren't power related and that your PSU isn't bad. The only way to do that is to try testing your system with another PSU. If you don't have a spare PSU, borrow one from a friend. If you somehow manage to find that your current PSU is fine then the motherboard is probably dead and you need a new one. If you aren't able to do that kind of troubleshooting, I think it's best to take your system to a service/repair shop. There they should tell you with absolute certainty what's wrong with your system.
 

panathas

Honorable
Feb 12, 2014
1,103
12
12,665
301
First you have to make sure that your issues aren't power related and that your PSU isn't bad. The only way to do that is to try testing your system with another PSU. If you don't have a spare PSU, borrow one from a friend. If you somehow manage to find that your current PSU is fine then the motherboard is probably dead and you need a new one. If you aren't able to do that kind of troubleshooting, I think it's best to take your system to a service/repair shop. There they should tell you with absolute certainty what's wrong with your system.
 

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