I have an AMD Athlon M4 Thunderbird Slot A 1.33 GHz processor, MSI MS-6380, VIA VT8366 Apollo KT266 CPU to PCI bridge, Micron 256MB DDR-SDRAM, VIA VT8233 PCI to ISA bridge, Windows XP Professional build 2600, and an nVidia GeForce 2 MX 200 video card. Before installing XP, this system worked just fine in Windows 98. Now, my XP system reboots infinitely, every time I boot up. Sometimes, I don't even have time to launch a program or access the start menu. Other times, I may be able to launch Internet Explorer, but then the machine stops responding completely, and just freezes for a few seconds. Then it reboots. It is a neverending process. I have tried completely removing the video card, flashed my BIOS to the latest version, installed the latest VIA 4 in 1, and got the latest video drivers from Windows Update and I still have the exact same problem. The only reason I am able to write this now is because I'm using an old Diamond Viper card I happened to have laying around. Might anyone have any suggestions on what I can do to remedy this problem? Thanks.