Hi, I sent one of my computers to a technician because a hard drive was corrupt. The technician removed the drive and installed Windows XP on another drive that was in the computer but he didn't use my motherboard CD, he used Windows default drivers. Now I have no LAN or sound and the video screen flickers a little causing eyestrain. My newbie question is: How do I replace the default drivers with the drivers from the motherboard CD (ASUS A7V600)? The ulitity screen on the CD says "Detect no proper item".