Clear The Page File On Shutdown

This setting may or may not improve your system’s performance (it depends on your
usage patterns), but it does provide relief to the paranoid. Your Windows swap file may
contain unencrypted text, including passwords, that could be exploited by interested
parties. To delete the file when you shut down your system, you’ll find a setting under
Computer Configuration > Windows Settings > Security Settings > Local Policies >
Security Options called “Shutdown: Clear virtual memory pagefile”. Double-click this,
select Enabled and click OK. Your shutdown time will increase marginally, though.