PC only powers on for a few seconds....

ghutchison14078 · 10 Apr 2012 at 20:19

Pretty much as title says....

When I push the power button the pc fires up (fans, lights etc) but switches itself off after about 3 or 4 seconds....doesnt make it as far as POST screen and there are no beep codes.

Its my old system that I built in 2007 which my girlfriends little brother has now inherited for school work and web browsing (specs below)

Just wondered if anyone has encountered this problem before and what the culprit / fix was???

Specs:

AMD FX-62
Asus Crosshair Motherboard
4 Gb corsair xms ram
8800GTX
500Gb HDD
2x DVD Drives
Creative X-fi sound card
Tagan 700w PSU
Thermaltake Tsunami Dream case

Any help is appreciated!

ghutchison14078 · 10 Apr 2012 at 20:23

MonsterMoshi said:
Try resetting the CMOS by removing the battery for 10-15 minutes.
This worked on an old system of mine although that was intel
Worth a try

Will give that a bash...cheers

ghutchison14078 · 10 Apr 2012 at 21:02

Aid4nTheNoob said:
Had this exact same problem a few weeks ago.

The CMOS reset fixed it.

Good luck!

Hasn't worked; tried removing the battery and resetting the cmos (switching jumpers and pressing clear cmos button)

Same when I powered on again

ghutchison14078 · 10 Apr 2012 at 21:20

I'm thinking it is the PSU, I've checked the wiring from the power on switch on the case to the connectors on the motherboard and it all looks fine so I dont think there is a short anywhere

ghutchison14078 · 11 Apr 2012 at 17:47

craarc said:
check all the psu connections unplug and reset also remove all your usb hubs devices that are not needed and try that as a last resort try reseating the gpu and cpu again all worth a try

Would an incorrectly seated CPU or GPU cause this issue; I thought it would at least make it as far as the POST screen if there was a problem with RAM, GPU or CPU??