I had burnt two sessions of data in the DVD disk. When I wrote the third session, after burning, i received an error message that it encountered an error and hence closed as failed. Afterwards I am not able to read the disc at all. Even the first two sessions are not readable. Then I used nero to collect the information of the DVD. It returned a message that the third session is not closed. I have attached the screen shot of that to this. Can some experts suggest how to revive this disc? Thanks.