I recently purchased a new case and power supply and took them with my computer to a computer service shop to have everything removed from my old case and put into the new case. Everything was working fine, just wanted to upgrade the power supply and have better cooling with a new case. Anyway, the place (who I trust) calls and says everything transfered fine, but the cd and dvd drives will power up, but they will not read any discs. It worked fine just prior to the transfer. They then put the old power supply in the new case and tried one in their shop with the same result. Any suggestions on what I can tell them might be the cause of the problem? The new case is an Aerocool and the power supply is 550 watts, also by Aerocool. Asus motherboard, 3.2 P4, Windows XP w/ service pack 2 and all updates loaded, the dvd burner is a Sony, but I am not sure of the cd. Any help would be greatly appreciated.