Remove Shared Documents

Open Regedit(Start- Run- Regedit) and navigate to HKEY_LOCAL_MACHINE SOFTWARE Microsoft Windows CurrentVersion Explorer My Computer NameSpace DelegateFolders There will see a sub-key named {59031a47-3f72-44a7-89c5-5595fe6b30ee}. By Deleting this you can remove the ‘Other Files stored on This Computer’ group.

Turn Off System Recovery

Right click on My Computer and choose Properties. Click on the System Restore tab and check the box Turn off System Restore. (This will increase Windows performance & save disk space)