Windows 7 experience Index Data transfer rate is low

Many people facing  low Hard disk experience index (Data transfer rate) rate , which was higher in Windows vista. It can be solved using easily.

1. Control Panel -> Hardware & Sound -> Device Manager.
   
2. Under Disk Drivers, Choose your hard disk.
   
3. Right Click -> Properties
   
4. On the  Policies Tab, Uncheck  "Enable writing cache on this Device "
   
5. Now again Re-run the experience index assessment from Control panel -> Performance Information and Tools.
   

This method will work on most cases.

I improved my rating from 2.0 to  4.9 !!!

It is better to Re-enable  cache settings after running the test. You will get better performance with cache enabled. It wont hurt again your  WEI score .

This is what you should do.