My system : ASUS A7N8X Mobo nforce2 chipset, 420 W PSU 18 A on 12 V rail , AMD AthlonXP 2800+ Barton , 1 GB DDR333 RAM , 7600 GT AGP , Creative X-fi Xtreme Audio , Windows XP. Some games like Splinter Cell, Driver 3 , San Andreas cause my computer to restart . I have the latest drivers for everything . When i report the error to microsoft i get this response : Problem caused by Device Driver You received this message because a device driver installed on your computer caused the Windows operating system to stop unexpectedly. This type of error is referred to as a "stop error." A stop error requires you to restart your computer. I dont know which driver is causing this . EDIT : This is what i got on BSOD , DRIVER_IRQL_NOT_LESS_OR_EQUAL p17xfi.sys - Address f69ed0c7 base at f69bd000 that file p17xfi.sys , is that related to my creative x-fi soundcard drivers ? i have the latest drivers for that card . EDIT : I removed the X-fi Sound Card and its drivers , First uninstalled with revouninstaller , then cleaned in safe mode with driver sweeper and driver cleaner . And now all the games work . So i guess it was the card causing all the problems . SO what should i do now , i had the latest drivers for that card . UPDATE : I reinstalled the drivers and put the soundcard , and again the same problem . I also did memtest and got errors . So is it the RAM or the soundcard drivers ?