Hi and Welcome![QUOTE=t_shanky_n;2249815]
My CD/DVD drive has not been working for almost 6 months. It is absent from “My Computer” and “Device Manager”. I have looked for it in the safe mode too, but could not find it. I know that the light on the drive flickers when the laptop is turned on. [/quote]Then there might be some problem with either the drive’s hardware or there is a connection problem.
Try if you can physically remove and reinstall the drive. You may have a look at www.irisvista.com if there are instructions for your laptop.
Before you start with dismantling your laptop (assuming warranty has expired, please try if you can boot from a bootable CD or DVD.
I lately realised that the drive for this hardware was not digitally signed by Microsoft.
What is the file name of that driver?
Matshita DVD-[B]PAO[/B] UJ-841Q CD/DVD drive.
Is this verbatim or a typo? And from where did you take that string then? Still visible (with error indicator) in device manager?