have to replace the motherboard? My computer is showing no display and I think I've ruled out everything except the motherboard. Changing that is obviously expensive and time-consuming, so please tell me if I'm missing anything!
My PC has no display at all, even when booting. There is also a slightly odd POST beep on startup of one long beep and two short beeps
, the hard disk lights suggest a normal boot sequence and if I type my password blind, it appears to log in normally, again judging by HDD activity. It seems only the display is not working.
Here's what I've done to narrow down the problem:
- I have plugged another computer into the monitor, which displayed fine.
- I have connected the computer to the monitor using the VGA socket instead of the usual DVI. It didn't change anything.
- I borrowed a graphics card from a friend and tried to use it. No change.
- I took the graphics card out and pressed it back in as firmly as I could. No change.
- I tried booting with each one of my two memory sticks. No change.
The only other thing I have left to try is to disconnect all USB/SATA devices and try to boot without them. Let's assume that doesn't help.
Is there anything left to do but replace the motherboard?
Obviously I don't want to do that unless I'm 100% sure that it is the problem. The idea of buying a new board, dismantling the PC, moving the CPU from the old to the new board and then discovering the problem lies elsewhere causes me anguish.
My PC is home-built and has run without problems for more than two years. The motherboard is a Gigabyte GA-P35-DS3L and the graphics card is a GeForce 7300GT.
Background: Recently I had an hour of PC display problems. My display would freeze for a few seconds, then blank, then return to normal for a while. If I was scrolling when it froze, there would be some distortion on the screen. I reduced Windows hardware acceleration to the minimum, which helped. I installed the latest video drivers, but still was unable to use hardware acceleration. The next day, the problems above started.