When I play Call of Duty United Offensive (1.51) online or FarCry (1.33) single player for about 15 minutes (sometimes after 1 hour or 25 minutes), Windows XP crashes and just after a lovely BSOD :evil: my computer reboots. It happens every day. :dead: The system: Intel Pentium 4, 3 GHz Memory: 1536 MB Video: Asus 9800 XT Driver: CATALYST 5.8, ati8_141_w2kxp of Asus site and older drivers: didn't solve the problem. Sound: Audigy 2, driver 220.127.116.114 Seagate (SATA) drive Silicon Image SiI 3112 SATALINK Controller, NoRAID DirectX 9.0C I've tested the memory with memtestPlus 1.60: no errors after 3 hours. Measurement with Motherboard Monitor (MBM) 18.104.22.168 while playing Far Cry: temperature CPU just before BSOD: 54 degrees Celsius. Measurement with ATITool 0.24 while playing Far Cry. Temperature just before BSOD: GPU: 64.0 degrees Celsius, while GPU environment: 57.0 degrees Celsius I never use overclocking because I have troubles enough with the default clockspeeds: Core=412 Mhz, memory=365Mhz. Who can help me??? Some debuglog information: See the attachment!