Hi,
- Are you connected on a domain?
- Do you get any error message?
- Was it a failed update? What did it say in the Update History?
Method 1:
I would suggest you to run the Windows update troubleshooter and check.
Open the Windows Update troubleshooter
http://windows.microsoft.com/en-US/windows7/Open-the-Windows-Update-troubleshooter
Method 2:
If the issue does not get resolved then I suggest you to go through the steps and run the automated FIXIT from the link mentioned below:
Troubleshoot problems with installing updates
http://windows.microsoft.com/en-us/windows7/Troubleshoot-problems-with-installing-updates
Also refer:
You cannot install some updates or programs
http://support.microsoft.com/kb/822798
Method 3:
Update a driver for hardware that isn't working properly http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly Update drivers: recommended links http://windows.microsoft.com/en-US/windows7/Update-drivers-recommended-links
If it was a video card driver I would suggest you to go directly to the manufacturer’s website to get it.