umm... i have no idea what just happened to my computer. there i was, watching heroes on my pc when zhoom - my screen flicks onto 'no signal'. First I thought it was the power saver kicking in. but when i moved the mouse, nothing happened. and I realised the sound had cut too, so i thought maybe my graphics card wasn't the problem.. I just tried rebooting, resetting the CMOS, taking out my gfx card and cleaning it (just in case that IS the problem) but it still wont work! Nothing shows up on the screen when i boot up! help! its was a 900 dollar video card i hope there's nothing wrong with it! I'm running an Athlon64 3500+, nvidia 7800gtx, on an Abit an8 sli fatal1ty mobo