I installed a asus crw, and my comp. shows it in device manager with an exclamation mark, says driver corrupted, it also said this for my old lg drive, i replaced the ide cable, it's set to 2nd master in bios, jumper to master, i realized it had stopped even showing a D drive in my comp. a few months ago, i thought the drive was bad, but doing same thing with brand new asus drive. I have dell 4400, 4y/o, with new winxp update in dec. cd drive worked fine after upgrade till few months ago. Please help.