Which of the following should the technician attempt that will MOST likely resolve the performance issue?

A technician responds to a report that a user’s desktop is operating much slower after upgrading the Windows OS to the latest version. The technician notices responsiveness is erratic, and the symptoms are similar to a failing hard drive. The technician runs a full hardware diagnostic, and all systems pass. The technician checks the properties for each device in Device Manager and the hard disk and the standard AHCI 1.0 serial ATA controller both indicate the following message: This device is working properly .

Which of the following should the technician attempt that will MOST likely resolve the performance issue?
A . Roll back the OS upgrade. Continue using the older version of Windows
B . Reset the PC to its factory conditions. Perform the OS upgrade again
C . Update the SATA controller driver from the manufacturer’s website
D . Perform a full backup and replace the hard drive

Answer: C