I'd try another video card.
Hello, my computer spontaneously stopped working last night. I was browsing a web page and random grey blocks started appearing. I presumed it may have just been a display issue as I shut it down and went to bed. I turned it back on this morning and now it's displaying grey strips vertically across the screen about an inch apart from each other. The computer itself starts up to Windows then just displays the blue screen of death; I can't make out what it says though. I've replaced the memory and that doesn't seem to be the problem. I've also changed the HD with one from another computer to see whether that was the problem (which it isn't).
Does anyone have any idea what the issue could be?
Thanks in advance, Alex.