Out of the box: AMD A64 X2 3600+ 2.0GHz AM2 CPU 2GB PC5400 667MHz DDR2 Dual Channel Memory (1GB x 2) K9N6SGM-V MCP61 mATX Motherboard nvidia GeForce 6100 video chip set on logic board Microsoft Windows Vista Business What someone else did: Installed Windows XP Professional with Service Pack 2 Installed Service Pack 3 Installed DirectX Then I came along where the user was complaining about everything redraws slow. When a window is moved the video is very sluggish, same with scrolling in IE. I looked in the Device Manager and there are no Display adapters or Monitors listed. I then looked at "Other" where there is a question mark with the following: Video Controller (VGA Compatible) I tried upgrading the video drivers with the drivers cd that came with the system. I downloaded the latest drivers off nvidia's web site. Rev 178.13 I have tried 5 different drivers I have found on the net. I tried letting the wizard find the driver, I directed the wizard and I choose the driver myself and all came up with the same error message... "The specified loaction does not contain information about your hardware" or "The wizard could not find the software on your computer for Video Controller (VGA Compatible)". I tried searching the net and can't find any previous issues that can help me. I looked in the inf file and the 6100 is listed in there for the installer. I called the support people of the computer and they said the registry is either locked or I need to go back to Windows Vista Business. They said the drivers should work with Windows XP Pro. One rep recommended reinstalling the chip set drivers. I did so, tried the installation and that did nothing. I still have the same error. There are no nvidia software listed in the "Add/Remove" Control Panel. I downloaded "Driver Cleaner" and installed it. I ran "Cab Cleaner". I ran "Driver Cleaner", after choosing nVidia drivers. It said it removed them. I rebooted, tried updating the hardware and got the same error "The wizard could not find the software on your computer for Video Controller (VGA Compatible)". I am at a loss. Does anyone have any idea's? Can I install the drivers manually and if so how? The individual who upgraded this cpu did this per corporate, so it has to stay with the upgrade. I really do not want to have to spend the time trouble shooting the removal and reinstallation of Windows XP Pro and SP3. Any help would be of great appreciation. Thanks for your time, Guy.