i have two cd rom drives on the secondary channel. windows no longer loads the drivers. if you look them up in device manager, both drives show up, but with an exclamation point. windows says drivers missing or corrupt. i have uninstalled and reinstalled with no luck. i have also installed a third cd drive, still no joy. i replaced the ide cable just to see, no luck. it is a sony vaio desktop. no motherboard drivers or cd drivers on their website. i can boot to the cd drives in dos. drives are set to auto detect in bios. can i repair windows to resolve this problem?