When you install Windows 7 Service Pack 1 (SP1), you may receive the following error message:
This issue can occur if Windows 7 Service Pack 1 (SP1) was downloaded by Windows Update but has not yet been installed, or if the installation has become corrupt. For more information about this service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2
After the removal is complete, type exit, and then press Enter.
Restart the computer.
Determine whether you installed the Beta version of Windows 7 SP1
If you installed the Beta version of Windows 7 SP1, you need to uninstall the Beta version and then install the released version of Service Pack 1. To Uninstall the Beta version, follow these steps for your version of Windows 7.
Note If you uninstalled the Beta version of Windows 7 SP1 and you continue to receive the error, you may have remnants of the Beta version on your PC. These steps will also clean any remnants of the Beta version from your PC.
For the 32-bit version of Windows 7
Click Start, and then type cmd in the Search box
Right-click cmd.exe, and then click Run as administrator.