Dead verbatim

I apparently killed a verbatim x4 Dvd+rw no matter what i do i can not get it to erease completely. can sombody possible tell me of a way that can cure this poor disk. this is not the first time that i have done it but the first time that i have not gone balistic on the disk. I tried nero express as well as incd.

Which method are you using? (Quick erase or full erase)?