No. The corruption is on the computer or DVD-Reader as I tried the DVDs on other computers and they work.
So, DVD-ROM was seeing all DVDs blank. Then, I made a restore on the main Windows partition and some started to work, some were seen as blank still. I have another system image of like a week ago. In a couple of hours, I will do a complete disk restore and check the results. I was having a couple of problems with my softwares anyway since I made a 'drivers update' after I made this image; so it will be good I hope.
I will check that software, it seems useful. And since it is for Windows 7, it is newer than my software.
I am using Cyberlink PowerGO for burning images and it seems to work fine for years. But it has not been updated also (It is shareware). The tool you suggested seems very helpful.
Thank you so much again as always!