Geforce 2 Mx 1280 problems with directx

I have just built a PC. Specs are as follows:
KT7A-RAID Mobo, AMD1000GHz Processor, 224Mb RAM, Gforce 2 MX Graphics Card, IBM 30Gb HDD, ect. The problem is with the graphics card. When I try to run Dxdiag.exe the monitor switches of and I have to reboot. Also it will not run 3D games (Q3 ect.). Tryed directx 7 and 8 and also the drivers for the graphics card are the most up to date.