pc will not boot to post

sic6six · 16 Feb 2014 at 02:26

My pc had been having issues where it would boot in and then after an undetermined amount of time in windows the screen would lose display connection and the only way I could retart the machine was to pull the power plug from the psu (the I/O switch would not work on the psu). I decided then to swap the ram sticks around. Tried to boot her up afterwards and she wont even show display, post, or even beep. I tried removing the ram sticks and no beeps what so ever. Ive unplugged hdd cables to see if it was power consumption and nothing. Im thinking it could be the psu however I am uncertain. Any ideas guys????

Forgot to add. All fans and lights are active when powering up

ExRayTed · 16 Feb 2014 at 09:49

If all the lights and fans spin up it's unlikely the power supply is at fault. Could you list the rest of your spec please including any overclocks.

sic6six · 16 Feb 2014 at 11:15

Amd athlon 64bit x2 5000+ processor
4gb ram
Geforce gtx 285
Sb xfi audio card.
Zalmann 1000w psu
Biostar TA760G M2+ motherboard

No overclocking done.

I had a feeling it would be the psu however with the power switch being faulty and not turning the psu off when toggled.

ExRayTed · 16 Feb 2014 at 12:27

The switch you describe is the switch that goes from the case to the motherboard. If you want to test the power supply try the paperclip test below. Quite why you've got a 1000W power supply to run that rig is beyond me

I'm assuming you can't get into the BIOS at all? Try to reset the BIOS by using the jumper on the motherboard.

sic6six · 16 Feb 2014 at 12:43

Yeah ive done that tray before. I know its not the psu now with everything starting up. I do have an old mobo that the pci-e slot fried on that I can test the cpu and team on as onboard still works. As I can't hear any beeps I'm leaning more towards it being the motherboard however I may take everything out the case to test.
I had the 1000w one because I've got 5 hdds in the pc at present due to my huge game and music collections

sic6six · 16 Feb 2014 at 14:42

Sorry to bump this. Does anyone have any suggestions.

ExRayTed · 16 Feb 2014 at 18:45

No beeps could be either the CPU (unlikely), the motherboard or the RAM. I've had 2 sticks go simultaneously before but you'd have to be unlucky for that to be the case.

Try disconnecting everything except the CPU; that's all HDDs, optical drives, graphics card, RAM, the lot. Turn it on and does it beep? If not it's the motherboard or CPU. If it does beep then add stuff in to find the culprit component

sic6six · 16 Feb 2014 at 21:49

Cheers ted. Will try that out when I can. Thanks for the assistance.

UPDATE:

Well it was the Motherboard. I was lucky enough to have a spare to test my processor ram and gfx with and it booted to post. Installed everything else and it booted up fine. I even have an extra 2gig of ram thanks to a friend who gave me the spare mobo and ram as payment for upgrading his pc