I have a PC with next configuration: AMD Athlon XP 1700+ HDD 40 GB WD Motherboard Aopen AK77 8 XN 256 DDR SDRAM Video - WinFast A 180 DDR with 64 MB and TV out OS Windows XP SP1 I use a videodriver from Leadtek (based on 4469 Nvidia Detonator). It appears that all the things are good and I install UT 2003 on this configuration. The games is working good and I make a Benchmark winth UT 2003. The results are: Flyby ~70.4 Botmach~38.7 With 3DMark I've got 230 poits. After that tests, I've got a black screen and after a few moments, video was like VGA mode (low colors). I restart, Windows XP tell me that it was a problem (sent it to Microsoft but I have no license). After restart, system woks fine with no problems. Is something wrong with my video or my videocards not working well with motherboard? I install Riva Tuner and I set AGP at 4x (not at 8 x). Is this the solution? THANK YOU!