I had the same error (0x80070570) over and over with different DVDs (EMTEC, Verbatim) and isos. I even thought my dvd drive was faulty or something.
After recording 4-5 DVDs with no results, I solved it by downloading a different version of the W7 iso, unrared it then burned it at low speed (2,4x or 1x, I can´t reckon now) with ImgBurn. The problem was gone!
So be patient and keep on trying... As Dekker used to sing... you can get it if you really want!
Cheers
kaip supranti čia md5 klaida, teks atsisiųsti iš naujo, arba kitą versiją siųskis (na tipo kitą torentą ar pan)