Hi, I have just replaced my DVD drive with a combi DVD writer. Gone from a TEAC DW-224E to an NEC 5540. Problem is I am getting the above error. The drive powers up for a few seconds, indicated by the drive light, I can eject it during that time. Once the laptop has booted up the writer refuses to do anything. Not registered in My Computer, or in system. Changed the drives back and everything is ok. Looks like the drive is buggered but just need reassurance before going through the drawn out returns procedure.