Currently I have a problem with one of my machines Spec: MSI KT4 Ultra (without LAN or SATA) AMD Athlon 800 (Soon to be Upgraded) 256Mb 266Mhz RAM (Soon to be Upgraded) Sparkle Geforce 3 Ti 200 64Mb Using the Onboard 5:1 Sound Generic Network Card Windows XP Professional (Windows 98SE) NVIDIA Detonators 23.12 / 27.70 Latest VIA Drivers Currently I am having problems with Blue Screens of Death (IRQL_LESS_OR_NOT_EQUAL), under Windows XP which I have been unable to come up with a soultion as yet. Mostly they occur when trying to do any serious work (such as DivXing), and occassionally just when booting up, yet it will play games all day without a single problem. I have tried reinstalling Windows several times, both with and without VIA Drivers, in order to try and eliminate the problem, but even without any drivers installed (i.e. plain XP installation, with just one of my DivX programs) and I still get these errors. My only guess would be that it is a IRQ sharing problem, since I have about 4 devices (GF3Ti, USB2 controller, and 2 others) sharing IRQ11, but this cannot easily be changed, can it? And to make this issue even worse, Windows 98SE still works fine, which leads me to believe it is a Windows XP compatibility or configuration issue. Does anyone have any suggestions ?