It's not recommended to uninstall the Windows 7 SP1. If you want to uninstall it because of some hardware problems, Then it's the betterway to uninstall, Follow the steps given below
- Click the Start button , and then, in the search box, type Command Prompt.
- In the list of results, right-click Command Prompt, and then click Run as administrator. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
- Type the following: wusa.exe /uninstall /kb:976932
- Press the Enter key.
That's it.. you have done with it ..
Note:This is the Method recommended by Microsoft