Lg gh22np20 dvd rw

LG GH22NP20 DVD RW I recently bought this item
I bought a couple of DVD Movies I want to back up on DVD+R discs
and use them instead of the originals to protect them from scratches etc.

The drive will copy to my HDD but when I try burning them the drive locks up and will not burn.I have to reboot in order to open the drive.

Que Pasa? AC