toshiba dvd drive, wont work!

i have recently ran a system restore, making my pc back to its factory settings, but when the system was restored, i found that the dvd r drive was no longer there, so i went to device manager to find the ! mark over the device and foung the error code
Windows successfully loaded the device driver for this hardware but cannot find the hardware device. (Code 41)
i then checked all wires were in place, and rebooted, still no good, so i then unplugged the wires and put them back it, windows recognised the device, but still after about 10 seconds i found the ! mark and the same error,

any1 have a clue how to get it working?

thanks

See my other post on PCHelpForum ;o)