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This brief post will show you how to remove and clean your Windows 7 from  backup files and other leftovers created during the installation of Service Packs such as SP1, SP2, RTM etc. In fact, you have to know that while installing a Service Pack , Windows 7 will automatically create a restore point. (a kind of system snapshot containing a lot of files). Basically, it will backup all of your system files, just in case you need to restore your operating system later. (also see: remove Sp1 backups from Vista) All these files and backups will be stored somewhere on your hard disk. Because of this your computer might experience a low performance (slow computer) and, undoubtedly, you will have less space for your personale and private stuff. Let’ see how to fix this thanks to a simple trick!

In order to delete and remove backups from your computer which were left after the installation of Windows 7 service pack you  only need a simple DOS command. No sp removal tools, no software or tricky procedures to follow! But before proceeding read this a little side note: be sure that the installation of your Service Pack has been successful. To try this, restart your computer and make some of those common operation you used to do before updating the system. After that, if everything is all right:

1. Click Start.
2. On the Search field, type cmd and do NOT press Enter.
3. Right click on the Command Prompt icon and click Run it as Administrator…
4. Now, on the black Command Prompt window, type: dism /online /cleanup-image /spsuperseded
5. Press Enter.

This simple command will remove all the leftovers and backups files left after the installation of the Service Pack. It will also delete all the files necessary to uninstall the service pack itself. So be sure about what your are doing. After point 5 (press Enter) you won’t be able to uninstall the service pack anymore!