PC reboots right after power up

[Brujah]

Hello everyone, could really use some help here before i go and spent cash on something i didn't have too.

So i went to work and came back 4 hours later and the PC was working fine before i left. So i turn it on and it reboots now before i can even get into Bios.

No way to startup in safe mode since i cant even go into bios and do anything.

Anyone got an idea what might be causing this issue?

 

[Daveskater]

try reseating things like the ram, ide/sata cables and if that doesn't help you could try one stick of ram at a time if you have more than one

 

[Brujah]

Well it happend 2 days ago, so it has had plenty of time to cool off if that was the case.

I think the issue is with one of the hardwares in it, but i dont know enough to guess which it may be. And would hate to buy a completely new comp.