I have a IDE Lite-On DVD Writer in the new PC. It's been working for a couple of months now with no problems. I went to install a Samsung SATA DVD Writer too. Vista tried to install the device, then a message came up stating that the device driver was blocked and that I should go to the Samsung site for their driver. Samsung has no driver for Vista, much less Vista 64 bit. Now Vista is saying the same thing about the Lite-On driver. I went to their web site and you guessed it. No driver needed. I've uninstalled and taken out the Samsung and uninstalled the lite-on with no success. I went back to a restore point before the installation and it didn't do any good. All I get is the little yellos exclamation point in the device manager beside the Lite-On Drive. The bios is seeing the drive with no problems. (Intel DP35DP Board, Intel E 4500 Processor, 4 gigs RAM, Windows Vista 64 bit) Any assistance would be greatly appreciated.

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One answer is that for some reason vista initially has no problem installing generic drivers, but after you do anything to upset that, as your new device did, VISTA has a problem reverting to generic. Try to go into your device manager and find you Yellow Exclamation go in and click on Properties/Details and try to tell it what your device is. In your case the Device description would be simply "CD-ROM Drive". This has worked for me. The rest of the info it picks up from the Plug N' Play.

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It might have to do with unsigned drivers.I don't know why it would do this with 
a dvd drive I don't know but it's worth a shot.

http://www.mstalkonline.com/vista-install-unsigned-hardware-driver-in-x64-bit/

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