If you wish to remove an OEM driver and revert to the Microsoft driver, you must locate the appropriate %Systemroot%\Inf\OEM#.inf file, where # is a system assigned number. If you edit each %Systemroot%\Inf\OEM#.inf file, you can determine which one installs the OEM driver that you wish to remove. Once you determine the %Systemroot%\Inf\OEM#.inf file, you should move it, and its' matching %Systemroot%\Inf\OEM#.pnf file, to a different folder, in case you every want to reinstall it.
NOTE: The following oeminf.bat script may assist you in locating the correct %Systemroot%\Inf\OEM#.inf file:
cd /d "%Systemroot%\inf"
for /f "Tokens=*" %%i in ('dir /b oem*.inf') do set file=%%i&call :parse
for /f "Tokens=*" %%j in ('type "%file%"') do set line=%%j&call :parse1
if "%mfg%" EQU "Y" goto doit
if "%line:~0,1%" EQU "\[" goto found
@echo %file% %line%
if /i not "%line:~0,14%" EQU "\[Manufacturer\]" goto :EOF
NOTE: To use the OEM driver again, move the OEM#.inf and OEM#.pnf file(s) to the %Systemroot%\Inf folder, uninstall the device using Device Manager, and restart your computer.