The PC itself works fine. Disks with anything on can be read without problem. The problem arises when a blank disc is inserted as this causes the pc to crash. Upto now I have:- 1. Tried several different types and makes of blank disks. 2. Gone into device manager and uninstalled the CD and DVD drives so that when the PC is switched on it will reinstall them as it boots up. It did reinstall the drives but the problem remained. 3. Reinstalled Windows from a restore disk, again the problem with blank disks remained. 4. Purchased a new internal disk drive but again the problem remained. I am pretty convinced that the problem is somewhere in the Registry Directory but am unsure of what to look for. Can anyone please offer advice or help?