There have not been many complaints yet from users who have installed the service pack update on their Windows PCs. Still, there are always some cases where users want to uninstall the update again, likely because it is causing instabilities or other problems on the system that were not experienced before.
Those users need to uninstall the Windows 7 Service Pack 1 to restore the old state of the system prior to the update.
The Control Panel provides access to the easiest service pack uninstallation option.
Users need to click on the Start orb on the taskbar and select Control Panel from the options. The uninstallation applet is available under Programs > Uninstall a program, or if all apples are displayed at once under Programs and Features.
Locate the View installed updates link in the left sidebar and click it to open the list of updates that have been installed on the computer system.
Windows displays a list of all updates that have been installed on the system. The service pack is basically nothing more than a larger update. Locate the Service Pack for Microsoft Windows (KB976932) entry under Microsoft Windows. This is the Windows 7 Service Pack 1. To uninstall it select it with a left-click and click the Uninstall link to uninstall it. you need to confirm your selection and restart the computer after the uninstallation process has finished.
The uninstallation removes the service pack from the operating system.
Some users may not be able to uninstall the program via the Control Panel applet. This is for instance the case if the service pack installation corrupted the system.
It is then possible to use the command prompt to try and uninstall the service pack. An elevated command prompt is required. To get there, users need to click on the start orb, then All Programs > Accessories, and right-click on the Command Prompt entry there and select Run as administrator.
They then need to use the following command to uninstall the service pack again:
wusa.exe /uninstall /kb:976932
A confirmation is again required before the service pack is uninstalled by Windows.
System restore, or previously created backups, are another alternative if they have been created before the service pack was installed on the Windows 7 system. (via)
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