I have an AMD Athlon M4 Thunderbird processor at 1.33 GHz on MSI MS-6380 and VIA VT8366 system with an nVidia GeForce2 MX 200 graphics card, running Windows XP Professional 2002 build 2600. My system used to reboot constantly, sometimes immediately after booting into Windows, until I updated my BIOS to the latest version, installed the latest VIA 4 in 1, Installed the nVidia Detonator XP 21.83 drivers and disabled the 1T Command Rate setting for my DDR RAM in my BIOS. I thought the problem was solved because I was able to play all my games without a problem. However, I recently tried running a graphics intensive screensaver, and after a few seconds of running it, the system locked up and then showed me a blue screen stating the following: Device driver "nv4_disp" got stuck in an infinite loop and Windows was shut down to prevent damage to my PC. It said there was an error either with my hardware itself or with the hardware device driver signing. It gave me stop code: *** STOP: 0x000000EA (0x8173AB30, 0x812B5D68, 0x81AA7B18, 0x00000001) How the hell do I get this damned machine to behave properly?