1. Click Start.
2. In the Search Bar, type regedit and press Enter.
3. Locate the following key: HKEY_LOCAL_MACHINE\SOFTWARE\ Microsoft\SQMClient\Windows\DisabledSessions
4.In the right pane delete this subkey: MachineThrottling
5. Turn your computer off and back on for the change to take effect.
Source:-http://www.webtlk.com/2009/02/18/how-to-fix-windows-explorer-has-stopped-working-in-windows-7/





