My dvd driver dont work (by 2 users)

Problems like this are rally common, in fact CD/DVD ROM hardware will die at any point of its usage. When experiencing problems like "no disc on drive X" or "Can't read contents on CD" or if you have a dual function CD/DVD-RW, one of its functions will stop working.
Most problems can be solved by uninstalling the hardware and reinstalling it or check for firmware updates but chances are that you need to replace it with a new one.
I had a SonyVio laptop for 5 years and I replace the driver three times.

Good luck.