I assembled a computer a few months back and everything was working beautifully. I had turned my computer off for about a week and when I turned it back on it was not sending a signal to the monitor. I had it plugged into an hdtv, so I tried a traditional vga monitor, still no signal. I tried another traditional vga monitor I had in my house with the same problem.
The motherboard is past the three months I had to replace it (after having replaced it once before). I have no external video card (just the onboard video).
The computer specs are as follows:
-2x 1GB DDR3
-AMD64 sempron single core 2.8 GHz AM3
-APEX 500w ATX 12V PSU
- ATI Radeon HD 4250 (On board)
-1x 1TB HDD
-1x 500GB HDD
As I said it was working but when I tried to turn it on again it suddenly gave me no signal to any monitor I plugged in. If I had an extra computer laying around I would attempt to test all my parts until I found the culprit but seeing as this is the only tower in my house, I don't have that luxury. I would send my parts back but the only parts that are replaceable at this point is my psu.
I have read elsewhere that the psu could be the problem so it may be worth replacing the psu in case something happened to it.