Okay, I have an ATI Radeon 8500 on my Windows XP system, and one day, after my dad had used the computer, the 3D video driver stoppeed working. He can't recall doing anything. So it goes. I think "whatever", downloaded the latest Catalyst drivers, and try to install it, only to get the message "INF Error, Video Driver Not Found" and then "Try to set up your adapter with a standard VGA driver before running setup". I tried googling for info (apparently it's a common-ish issue), but I never found anything that worked. I tried uninstalling anything ATI and then installing, to no avail. I tried uninstalling the error-listed VGA adapter from the Device Manager and then running install which didn't work. Rebooting after that also didn't work (it popped up with "New hardware found" after the reboot, but it couldn't find the proper drivers). After an unedifying series of adventures I got to http://www.msi.com.tw/program/support/download/dld/spt_dld_detail.php?UID=45&kind=1 which has several drivers for my mobo. I first downloaded (obviously) the VGA driver, and tried to run setup. Unfortunately, after preparing the install, an Error message pops up saying "The system cannot detect the device, please confirm that the device is configured properly and restart the setup program." I then tried downloading the AGP upgrade, installed it, but nothing changed. I also downloaded the BIOS update, since it mentioned a VGA upgrade, but I'm uncomfortable with upgrading the BIOS if it's possible that that's not the main issue. I've tried using add/remove programs to remove any ATI from my computer, I've tried using older drivers, I've tried reinstalling Windows XP on a different Hard Drive. Nothing seems to work! If this could be solved ASAP, that would be lovely, as I'm going through video game withdrawl here (also scrolling in Firefox is all jerky and some videos are jerky when playing). Robbie B P.s: A nearly identical problem came up here: https://www.techspot.com/vb/topic15072.html and no one sorted it out for that guy. I hope this goes better.