Poor performance in a Dell Inspiron One after change hard disk by a WD Mainstream Classique 2 Tb

After change the original disk by a WD Mainstream Classique 2 Tb the performance have fallen. OS: Windows 7. BIOS configuration ACHI. On Windows CACHE is enabled. The problem is a a very slow transfer rates. Please Help!

Hello,

As a recommendation, test the drive using the Windows DLG utility to make sure that is not a drive issue.

For information on how to test the drive, please see the link below.

http://wdc.custhelp.com/app/answers/detail/a_id/940/session/L3RpbWUvMTQwMTkxMTU2NC9zaWQvVHk1NFctVmw%3D

Also check that the drivers for the SATA ports are properly installed.