Try this:
http://support.microsoft.com/default.aspx/kb/929461/en-us
I Bleed Blue and Gold
GO BEARS!
Hi there!
Every time my Vista x64 Ultimate wakes up from sleep for the first
time after rebooting, the DVD drive disappears. I need to reboot it in
order to have access to the drive. Is it a known problem, and how to
solve it?
I have a similar problem, only mine won't come back even after a
reboot. As of this morning my
DVD-RW (D: Drive) does not show up at all and is not recognized. Yet in
the device manager
it's there with the yellow error triangle...
Device Status:
Windows cannot load the device driver for this hardware. The driver may
be corrupted or missing. (Code 39)
Click 'Check for solutions' to send data about this device to Microsoft
and to see if there is a solution available.
Driver details:
C:\\Windows\system32\DRIVERS\cdrom.sys
Update Driver:
*results online search....The best driver software for your device is
already installed.
Windows has determined that driver software for you device is up to
date.
I get this when trying to install my driver:
Windows encountered a problem installing the driver software for your
device.
Windows found driver software for your device but encountered an error
while attempting to install it. Windows cannot load the device driver
for this hardware. The driver may be corrupt or missing (code 39)
If you know the manufacturer of your device, you can visit its website
and check the support section for driver software.
OK so now I go for a driver and support...
Sony NEC Optiarc Model# AD-7170A
Can't find a driver for it from Sony or Optiarc...can't find drivers
for any of their devices for that matter.
Did a system restore back four days.....no help
.....stuck