OK so since I have installed a fresh copy of Windows 7 on this computer ( it is the first operating system installed on it) I can not write any DVDs .A strange fact is that I can write and read CDs and also read DVDs, but not every time.I got an original CD Album and it's still not recognized by the PC for example, and this happens to many audio CDs. I tried many registry tricks and stuff like that but in vain. The computer is new, bought it one month ago. DVD+RW - Sony Optiaric AD-7260S I also tired to resolve the problem with FixIt but it was also useless.I kept getting the message: "The disc in drive [E:] is not detected, or is not supported" Hope someone can help me. Thank you very much!