Computer won't post, no windows screen just all black.

[MADWAD]

Ok any help would be appreciated on this. I recently (5 months ago) built my third computer, and until recently had no problems. I was playing fallout 3 and my computer locks up and I have to manually turn it off (ctrl-alt-del does nothing).

I try and turn it on again and all I get is a black screen, no windows screen at all(fans and dvd drive still spins). The next day I turn on my computer again and it actually comes on, I check out a few websites and go upstairs to get some coffee. When I return the screen is black and does not respond to anything. From this point on all I get is a black screen (fans and dvd drive still spins) when I try to turn on my pc.

The computer is very new so i'm almost positive it's not my processor, I thought it may be my video card but i've ruled that out (it worked in another computer). I tried resetting my motherboard bios and a just got a popping noise when I turn it back on.

I bought a psu tester the other day and it indicates over voltage from my psu, which in turn makes me think that my power supply fried my mobo.

I really hope i'm wrong, any advice or suggestions would be greatly appreciated.

Thanks.

 

[blinky88]

When these things happen it's natural to think the motherboard, CPU or PSU is stuffed, however, that's seldom the case. It is very possible it is not the motherboard as I have a similar problem with my PCs. I built 2 around 5 years ago and suddenly no post, blank screen on the one I use for the net. I stuffed around with it for a couple of days before finally removing the AGP card, it then booted into XP no problem. Thinking something had gone wrong with the AGP, I removed the AGP from the other machine and installed it, no post, blank screen. I have no explanation why this has happened, that said, you can bet the AGP cards are not the problem .... think twice before buying another board.

 

[TheHumanComputer]

take out ur GPU and try a diffrent one if you have one to see if it boots up

 

[blinky88]

Solved my AGP problem by re-installing the OS, no problems now .... AGP is installed. Should have thought of that before almost having myself committed.