Problem With Power Supply

[Lorenzo_Calosi]

Hello

Recently i've been experiencing a problem with my setup.
Here is my build, taken from Speccy:

Operating System:
Windows 7 Professional 64-bit SP1
CPU:
Intel Core i5 4690K @ 3.50GHz
Haswell 22nm Technology
RAM:
8,00GB Dual-Channel DDR3 @ 799MHz (10-10-10-30)
Motherboard:
MSI H97 GUARD-PRO (MS-7923) (SOCKET 0)
Graphics:
SMT22A350 (1920x1080@60Hz)
4096MB ATI AMD Radeon R9 200 Series (Sapphire/PCPartner)
Storage:
931GB Western Digital WDC WD10EZEX-08M2NA0 SCSI Disk Device (SATA)
Audio:
AMD High Definition Audio Device

My Power Supply is a EVGA 750 G2, and my RAM is 2 HyperX 4GB units... The Video Card is a AMD Radeon Tri-X R9 290

I've built this computer about 2 years ago, and it gave me some minor problems with the ethernet connection, and with CPU cooling, but it was fixed no problem.
Recently it has been shutting down and restarting after using it for a while. I've unchecked the option for restarting after a crash, but it keeps doing it. I tried stressing the Video Card using FurMark, and it didn't shut down. I believe the issue is with the PSU, as it doesn't even look like a crash, more like the pc just shuts itself down after awhile.... After it shuts down once, once you start it up again it will shut down sooner than the last time. Temperatures are always pretty stable, so that doesn't seem the problem, even though i don't know any application that could check PSU temperature. I don't know how to diagnosticate the issue, so i can't really tell what is going on.

Please help

 

[Louise Porkolt]

Hi there,

Have you tried replacing the PSU ? Sometimes PSU tend to heat and cool down stressing out components on it ! Mostly it's the caps which break (leak, swell or explode). If it's another component it's usually useless to check unless your a electronics-geek !

You could open the PSU but that is very dangerous if you don't know what you're doing as caps can store up to a few hundred Volt that can cause burns if you touch them ! I repaired a few in the past but the time working on one PSU is not worth saving the price of a new one !

Have you checked your mother board for broken caps ? have you checked the connections ? are all components plugged in correctly ? Is there a 2-DIGIT-display on the Motherboard ? this gives you an indication where it stops booting ! (not the PSU)

just start from there and let us know !
Cheers, Louise

 

[Lorenzo_Calosi]

Hi there,

Have you tried replacing the PSU ? Sometimes PSU tend to heat and cool down stressing out components on it ! Mostly it's the caps which break (leak, swell or explode). If it's another component it's usually useless to check unless your a electronics-geek !

You could open the PSU but that is very dangerous if you don't know what you're doing as caps can store up to a few hundred Volt that can cause burns if you touch them ! I repaired a few in the past but the time working on one PSU is not worth saving the price of a new one !

Have you checked your mother board for broken caps ? have you checked the connections ? are all components plugged in correctly ? Is there a 2-DIGIT-display on the Motherboard ? this gives you an indication where it stops booting ! (not the PSU)

just start from there and let us know !
Cheers, Louise

Hello,

I haven't tried replacing the PSU because i don't have one at hand, and it didn't want to replace it until i was sure that the issue was related to the PSU... i've checked the motherboard quickly and there was no sign of anything burnt or out of the ordinary. I still need to check if every component is plugged in properly, as i have only checked the PSU connections, and they seem fine. The Computer is a bit dusty, but i don't think that could be causing this issue? There is no display on the motherboard unfortunately.

I really have no clue what could be possibly causing this, i'll try cleaning it up this evening and then running it for awhile, and hoping it won't stop again!
Thanks,
Lorenzo

 

[Louise Porkolt]

Dust is a real pain for computers ! It prevents cooling resulting in component failure and in the best case thermal disengagement, meaning that the PC will shut itself down due to heat !

Clean out especially the fan and the "carpet" of dust on the heatsink !

Let us know,
Cheers,Louise

 

[Lorenzo_Calosi]

A minor update,

I cleaned up my PSU, and tried running Prime95 and FurMark together, it lasted for 3 hours, it usually doesn't last this long! Prime95 never failed a test, but it still restarted... no i wonder what it could possibly be...

Still confused

PS: The weird thing is, Prime95 never failed a test! It never stopped running until it was shut down, and it gave no error message!