Messed up DVD+RW - what can be done?

I have an NEC 2510a. I recently used DVD Decrypter to burn an ISO to it. Then I tried to erase it.

Now when I put it in my drive it continually tries to read it unsuccessfully. Then I can’t open My Computer or Explorer or Total Commander - let alone Deepburner or burnatonce.

What can I do with this disc? I want to format it and start again but my system won’t let me.

Turn off auto run for that drive and everything should be fine to format or erase the disc.