Greeting I just bought "LG

Greetings... I think your having a problem with your hardware DVD R/W.
based on your observation...
1) The dvd rom drive is detected on your windows xp and by pushing open/close button still working... " this indicate that the power and SATA / IDE cable was properly connected.
2) And you've said "NOT SPINNING".... "means you have undergo testing by touching or listening DVDrom drive while the disk was inside after closing the disk tray which is right"

Therefore your DVDrom drive was defective... you can also check by opening the metal cover to see if the disk was spinning and if the laser of optical lens released a red light.