When you install an OEM driver, the Windows installer program copies the OEM installation file (Oemsetup.inf) to the %Systemroot%\Inf folder. Setup then renames the Oemsetup.inf file to Oemn.inf, where n is an incremental number for each OEM driver that is installed.
To identify the OEM video-specific Oemn.inf file, you can open each Oemn.inf file in Microsoft Notepad, and then compare it with the original Oemsetup.inf file. After you find a match, move that specific Oemn.inf and Oemn.pnf files to a different location, or rename the files with a different file name extension.
After you locate the matching .inf files, move the Oemn.inf and Oemn.pnf to a different folder.
In Device Manager, right-click your video adapter, and then click Uninstall to remove the video adapter.
Restart your computer.
After you log on, you receive a message stating that new hardware has been found and that it is a VGA compatible video controller. The Found New Hardware Wizard starts.
Click Next.
Click Search for suitable driver, and then click Next.
Click to clear all of the search option check boxes, and then click Next.
Click Disable the device, and then click Finish.
After you finish steps 1 through 7, Windows uses the Vga.sys generic video driver. This is the same VGA driver that Windows uses in Safe mode.
If the computer becomes stable or shuts down in a typical manner while you are using the standard VGA driver, you may have to contact the OEM driver vendor to report the problems that you have when you use the OEM driver. You may also have to obtain and install a newer driver (if one is available) that resolves these problems.
To restore the OEM drivers, follow these steps:
Move the Oemn.inf and Oemn.pnf files back to the %Systemroot%\Inf folder.
Use Device Manager to remove the VGA video adapter, and then restart the computer.
Windows Plug and Play locates the OEM video adapter and reinstalls the OEM drivers automatically.
NOTE: If you press F8, and then click Enable VGA Mode on the Windows Startup menu, Windows starts with a screen area of 640 by 480 pixels with low 8-bit color and may use an OEM video driver, not the standard VGA driver.