PC Starting Issues

[mackenzie.johnston]

PC starts up then shuts down repeatedly. It was running when I left for work. It starts up and runs for a couple seconds then shuts off.

 

[xmd1997]

Sounds like a dying power supply. How old is your build?

 

[mackenzie.johnston]

It’s a few years old or so. My motherboard has a debug light system on it that flashed the CPU spot and DRAM but those parts are just over a year old.

 

[mackenzie.johnston]

It’s pretty dusty and dirty, would that cause it to act like this? Rest of the PC is pretty clean.

 

[mackenzie.johnston]

I don’t know what I did, but it’s running now. I blew the dust out of the PSU and after a few start up attempts it’s running. Don’t think this is a permanent fix. It does sound like it’s running a little rough.

 

[xmd1997]

It’s pretty dusty and dirty, would that cause it to act like this? Rest of the PC is pretty clean.

It definitely can. However, I wouldn't rule out the CPU either, a pc should typically shut down or restart if the CPU starts to overheat. Does any error messages pop up on startup or bios? Have you recently modified your pc in any way the last in the week? Also if it is your PSU then I recommend using the paper clip trick to verify that it runs and works correctly.

Here's a youtube video demonstrating it, all you need is an unpainted paper clip. If it fails this test then it's definitely your PSU.
https://www.youtube.com/watch?v=aU18uPlETCM

 

[mackenzie.johnston]

BIOS looked clean on start up. It asked to run the system in Safe or Normal mode, but I assume that’s because of the amount of times it tried to turn itself on. I’ll try the paper clip trick. The CPU is an Intel i7-7700k, it’s less than 2 years old. Same with my RAM. I’ll have to take it in and get it a look over. I didn’t build my PC myself. I had a professional company build it for me.

 

[mackenzie.johnston]

Okay, update. Everything booted up fine and it was running normally. Then it shut itself off and began doing the start up/shut down repeatedly.

 

[xmd1997]

Wassup! How are you doing? I'm just curious if you've ever found the solution to your problem.