I'm receiving the following error message regarding the DVD drive in two separate computers, using Burn-In-Test 7: D: Error while searching for files on optical data disk Access is denied (5) I've replaced the DVD drives, the SATA cable for the DVD drives, and the motherboards, with no change; the DVD drive still fails when I run Burn-In-Test. I've tried about half a dozen different test CDs in each unit. I even downloaded Passmark's test CD creation utility to ensure that my test CDs were up to date. All discs resulted in test failure. A forum search suggests that error 5 means some sort of problem with Windows security or a virus protection program; however, Windows Firewall is turned off on both machines, and neither unit has virus protection software installed. What does this error actually indicate?