A few days ago, I finally connected everything in my PC together after moving house. I realised that sometimes my LCD monitor will go momentarily blank or flicker with purple lines when using the computer for routine tasks. The monitor is connected to the PC using a DVI connection.
Then suddenly when I start up my computer this morning, the computer refused to boot, giving me one long beep and 2 short beeps continuously. When I turned on my monitor, it claimed there was no video input. Suspecting that it was a video card problem after googling for the problem, I changed the card (7300) with another (8500). Same problem. Then I tried to change the slot from the 16x to the 8x using my 8500 card. Still the same problem. So I'm at a loss now, what exactly could be the problem?