My computer having problems with New 1GB dual memory....

hello to everyone. Please I need to fix this problem badly!! My computer spec: A7n8x deluxe, amd XP3000, 3x512 Consair XMS, X800 Pro , 80gb. I recently just bought sticks of 2x512 XMS consair 3200 DDR400 dual Channel my last memorie was a 512 Consair XMS 3200 DDR400. After installing the memorie , I'v been getting just problems. after long run over night the computer freezes up with the monitor turned off with the computer running still or after 20min or lest playing Css or other games the computer crashes or doesn't respond at all. Another thing started showing up when game doesn't respond sometimes the VPU recovery ATI Catalyst panel shows up . If you don't know what is a VPU recover:

The VPU Recover error report contains the following system information only, which will be used to analyze the problem:

· Driver version

· AGP speed

· AGP version supported

· Graphics processor Device ID

· Graphics processor Vendor ID

· Graphics processor Subsystem ID

· Chipset Device ID (no board vendor information is sent)

· Chipset Vendor ID (no board vendor information is sent)

· Error flags

· System memory size

· Graphics frame buffer size

· Engine clock

· Memory clock

· Internal ASIC status, including register values and command buffer data




So After doing alot of memorie research I figured it could have been one thing....the timing of the memorie. But when I took a look at the setting in bios under advaned chipset option. everything seem to look right. the timing memorie were on 8-3-3-3t after playing around option In the bios I went back onto css for not at least 30min the game frozen up . So I then tryed another conclusion to see if rams were bad.
I tested each memorie seperately each playing 15min of Cs neither of them had problems. And now I dont know what to do!.