Hi all, new here, just hoping someone has heard something I have not. I bought a new computer around christmas (HP a1250n) and slapped in a radeon X700 256MB card for an immediate upgrade. (Also upgraded my sound card to a Soundblaster Live! 24-bit) Until now, I've had no problems with the system or the card. Now, however, when I start up a 3d game, and acceleration is needed it will play for awhile, then suddenly go to a black screen and hang. (Tested it with City of Heroes, World of Warcraft and EQ2.) Now, I haven't changed anything on my computer aside from installing a few programs that have no bearing on anything. I've scanned for viruses using Trend Micro's House Call, I've checked for disk errors, defragged; etc. Turned down video card acceleration. Still nothing. Just wondering, before I ship this thing off the manufacturer, is there anything else I need to check? It IS possible someone messed with something, since my computer has become the defacto "communal" computer since I live with 4 other people...but I doubt it. People know I will beat them within an inch of their life if they mess with anything. But if they did, and I cannot find it, I need to figure out what was "tweaked".