I attempted an optional Windows Update that updates the display driver (NVIDIA GeoForce GT 220) which has failed with a message that the BIOS needs to be updated. I updated the BIOS but still that update failed to install, leaving my display in VGA mode.
I rolled the driver back successfully but I now get the following message on startup:
Error In NVCPL.DLL
Missing Entry: NvStartupRunOnFirstSession
I understand that NVCPL.DLL is NVidia control panel and whilst it loads it is all grayed out, in other words,useless.
I downloaded (another) driver from Nvidia site which installed, seemingly successfully but the error still persists, restoring the (original) driver using HP built-in facility did not work; removing Nvidia from the startup (with msconfig) did not do the trick either.
My guess is that there is a missing entry in the registry but I cannot find trustful advice as to how to restore it, if indeed it is the problem.
Does anyone here has a solution to this problem? I am trying to avoid a clean-install of Windows which is at least two day work bringing my computer back to its currect state.
Windows Vista Home Premium 64bits fully patched
Processor: Intel(R) Core(TM)2 Quad CPU Q8200 @ 2.33GHz, 2336 Mhz, 4 Core(s), 4 Logical Processor(s)
BIOS Version/Date: American Megatrends Inc. 5.05, 04/06/09
SMBIOS Version: 2.5
Display Card: Nvidia GeoForce GT 220
Thanks in advance