Help! I can't burn DVDs

[barkroc2]

thanks for the response...reads factory dvds fine. the discs i make at first cause everything to lock up when the tray is inserted, the lite on the drive just flashes 100mph. when i eject the drive, windows runs fine again. if i wait it out until the drive "gives up on" reading the dvd, then check that disc in nero it shows as empty. strangley i noticed lately that after a "successfull" burn..that produced a blank disc, lokoing at the burnt to surface it all looks un-burnt, except for a noticeable ring abotu 1/2 inch in from the center..im stumped