ENABLE ADVANCED DISK PERFORMANCE

One more way to speed up your SATA hard drive and improve overall Windows 7 performance is to enable write caching. Be careful, though, and only enable this option if you have a UPS and there is absolutely no risk of power cuts. Otherwise you can lose your data. To enable advanced disk performance, do the following:

1.   Click on Start, right-click on Computer and go to Properties.
2. Click on the Device Manager on the left-hand side.
3. Open the Disk drives section, right-click on your hard drive and select Properties.
4. Go to the Policies tab.
5. Check Enable write caching on the disk.
6. Click OK and you're done.