Click on: Start Menu
Go To: Run
Type: Regedit
Look for the keys: HKEY_LOCAL_MECHINE\SYSTEM\CurrentConrolSet\Control \Session Manager\Memory Management\PrefetchParameters
Now look for the DWORD KEY : ENABLEPREFETCHERA
Its default value Is: 3
change the value to: 6
Now close the registry editor and restart your computer
Note: If you change its value to 1 it will be very slow
