Windows 7 Service Pack 1 (SP1)
Click here to Download Windows7 SP1(32bit)
HOW TO INSTALL..
1.click start download To install SP1 immediately, click Open or Run, and then follow the instructions on your screen. To install SP1 later, click Save and download the installation file to your computer. When you're ready to install SP1, double-click the file.
2.On the Install Windows 7 Service Pack 1 page, click Next.
3.Follow the instructions on your screen. Your computer might restart during the installation.
4.After installation is complete, log on to your computer at the Windows logon prompt. You might see a notification indicating whether the update was successful.
5.If you disabled your antivirus software, enable it again.
Uninstalling SP1 using Programs and Features:
The easiest way to uninstall SP1 is using Programs and Features.
1.Click the Start button , click Control Panel, click Programs, and then clickPrograms and Features.
2.Click View installed updates.
3.Click Service Pack for Microsoft Windows (KB 976932), and then click Uninstall.
If you don't see Service Pack for Microsoft Windows (KB 976932) in the list of installed updates, your computer likely came with SP1 already installed, and you can't uninstall the service pack. If the service pack is listed but grayed out, you can't uninstall the service pack.
Uninstalling SP1 using the Command Prompt:
1.Click the Start button , and then, in the search box, type Command Prompt.
2.In the list of results, right-click Command Prompt, and then click Run as administrator. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
3.Type the following: wusa.exe /uninstall /kb:976932
4.Press the Enter key.