regsvr32 /u /s igfxpph.dll
reg delete HKEY_CLASSES_ROOT\Directory\Background\shellex\ContextMenuHandlers /f
reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v HotKeysCmds /f
reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v IgfxTray /f