newbi needs help badly

[bandit-600]

help please i,m having trouble backing up dvd's. i can copy them so they play on my pc but they wont play on my dvd player. i got a friend at work to back up a film on 1 of my disc's to check if it is my dvd player and i can watch that ok so it's not my player and i am stuck as to what it could be.
my os is windows xp, the writer i'm using is a liteon ldw-822s multi format, the software is dvd x copy platinum, i have tried +r discs (check disk appeared on tv screen) and -rw discs (span in player like it was going to play it then nothing). i gave my friend a -rw to use and that is ok to play (backed up on dvd x copy platium also on xp) but i read some where that i might need to update my aspi drivers? where do i get them from and what version? i have got a celeron 1.8 gb prosesser if it makes any difference. please please please help or i might have to go back to vhs lol