Specs: CPU: Intel p4 3.4 ghz 800mhz FSB 2mb L2 Cache Mobo: ASUS p5nd2-SLI deluxe Vid card: BFG Tech gefoce 7800 GTX Memory: 1gig(512x2) corsair PC4200 ddr2 ram(http://www.corsairmemory.com/corsair/valueselect.html#ddr2dimm) HDD's: 150gb samsung HDD 110gb western digial HDD Pwr Supply: Powersteam OCZ technology 420 watt I believe that's all I need to include. So here is my problem: I bought all of that stuff recently, hooked it all up, formatted my harddrive and installed winxp+sp2 and all updates. I ran into a few problems in the beginning as my CPU heatsink and fan wasn't attached properly and came apart in the case causing the PC to turn off due to overheating. Prior to that I installed everything that came with my hardware... the mobo...graphics card..ect. Updated everything to it's latest drivers, and installed BF2 and 3dmark05. I ran 3dmark at it's default and scored 7302. I then played BF2 on all highest graphics settings in 1600x1200 reso, the initial FPS is about 80-90 then the game gets jerky and locks up on some frames. I tried on a lower screen res (1024x768) and it had the same problem. I also noticed ALT tabbing out of the game takes a LONG time, and the desktop loads in little by little in different sections. Also sometimes when alt tabbing in the bottom right corner of my screen a small grey strange looking box will appear. I get these same effects when closing the game also. I noticed one thing on my mobo where the CPU connects, 1 of those tiny little pins looks different from the others. It's not out of place I looked at it with a magnifying glass, it's just slightly discolored. I'm not sure if that could be causing these problems? I would think this new system I setup would run EVERYTHING flawlessly... so please if you have any ideas what may be causing these problems let me know.