Now i know
I went down to my garage with the battery,and started my M5-2003..I burned 5 dvds on my fathers burner and 3 dvds on my own burner...All 8 dvds worked great...It said:please wait a momemt in 5-10 sec,and the VOILA it worked successfully...So now i know that the problem insnīt my burner,but my friends MK4-computer i F***** up