one day the drive just stopped reading any type of disk. before i would play alot of games like need for speed and battlefield. i can open the tray although sometimes it wont work when i press the button, so i press eject on my computer. when i put a disk in and close the tray the motor that spins the disk does not work as i cant hear the humming sound.i open the computer and all the.connections were ok. so should i repair the writer or get a new one and how much would it cost?