Backup your important data and files prior to updating to service pack 1.Update device drivers if available to make sure the devices are compatible with the service pack.Make sure your antivirus software is up to date before doing so. Scan the computer for malware and viruses.Things that you should do before installing the operating system update: Users who work with multiple computers may consider downloading the service pack update from Microsoft Download for distribution purposes. Check the disk space requirements chapter to find out why it is indeed better to use Windows Update to install the service pack. Microsoft employee Brandon LeBlanc recommends that single PC or home PC users should be 'Windows Update instead of downloading the standalone installer (or Network Installation Package) from the Microsoft Download Center' because of the better 'installation experience'. Microsoft will make it available via Windows Update and the Microsoft Download Center. How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.The service pack will be released on February 22 to the public.

How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7 How to repair the operating system and how to restore the operating system configuration to an earlier point in time in Windows Vista (or 7) Maybe the System File Checker is an option? How to Perform an In-Place Upgrade on Windows Vista, Windows 7, Windows Server 2008 & Windows Server 2008 R2 What recovery options come with these machines? As SP1 is part of your install of Windows you have no other options other than a complete reinstall of Windows in order to reinstall SP1.

Win 7 service pack