I keep having problems with lockups/freezing in games - mostly new, graphics-intensive ones (Oblivion, Far Cry, BF2, etc). The game will freeze right where it is and a high-pitched noise will come from the speakers. It requires a hard reset. My graphics card is NOT overheating, though I used to have that problem, but now stays at 40C idle 62C full load. (I don't know what kind of temperatures the rest of the computer should be at - Rivatuner/ATITOOL detects Ambient going up to 50C and Core going up to 60C). I have all brand new audio and video drivers, as well as new DirectX. This problem has been going on since I first got my computer. Specs: Dell XPS Gen 3 3.4GHz Pentium 4 with HT 4Gb Dual In-Line RAM ATI Radeon X800 XT 256mb Soundblaster Audigy 2 ZS EDIT: BTW all of my games run fine, and then suddenly freeze, no signs of stuttering or any indication that it's about to lock up. 2 250gb Hds PSU-I can't tell much because the sticker is obscured by a metal plate, but it's a 460W.