110. Uninstall Windows Service Pack 1 (SP1)
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If after installing the latest Windows Service Pack 1 (SP1) update you find that you are having problems you can, if you wish, uninstall it.
To uninstall Windows Vista Service Pack 1, proceed as follows:
1/ Click the Start button.
2/ On the Start menu, Click Control Panel.
3/ In Control Panel, Click the Programs and Features Icon.
4/ In the Programs and Features window you will see a list of Tasks in the Left Hand pane of the window, Click the View Installed Updates option.
5/ A list of installed updates will now appear. This list includes ALL updates, not only those supplied by Microsoft.
6/ Look down the list of updates until you come to the Microsoft Windows section.
7/ In the Microsoft Windows section look for the following update Service pack for Microsoft Windows (KB936330).
8/ Click on this update to start the uninstall process.
9/ You will now be asked are you sure you want to uninstall this update? Click Yes to Continue with the uninstall.
10/ The uninstall may take some time, so be patient.
11/ After the Service Pack has been uninstalled you will need to restart your PC.
12/ Restart the PC.
13/ On restart the service pack will have been totally removed.