Does any body have a clue on what is causing this? I bought this diy online, worked fine for one year. Played wow, and did some work running autocad, rhino. And stopped using it 2 months. Turned it back on after a while and it worked fine for about 2 hours then it started to pixilate. I restarted it, works for 5-10 mins. Then lags, freezes and pixilated again. And now it won't show anything but still beeps. I tried cleaning the ram, re-plugged everything and it still won't work. Plugged it in without the ram and it keeps beeping so i think the mobo is okay too. Could it be my video card? Any info would be awesome!