I had a simular problem with my Samsung SH-S162L DVD burner just recently. Bought it from newegg back in March and after burning 10-12 DVD's just fine I started getting coasters. I used the Nero software that came with the burner and also tried my copy of Roxio, but nothing helped. It would play DVD's, CD's, burn labels using Lightscribe, just wouldn't do a DVD. I tried the ASPI install, nothing. Finally RMA'd it back to newegg for an exchange. The new one works just fine. Hard to believe that it died in less than a month, but it did. Might be time to buy a new burner.
