How do I solve a RING_SCN problen in XP

Hi!, How do I solve this proble, RING_SCN in Win
XP Media Player? I installed Direct DVD 4.48 driver for my DVD,when i tried to use the DVd to play a movie i found that there was no sound or video. Using XP DVD troubleshooter i got this ERROR Message ERROR ID=0x8007002,remedy ID=0x00000000. In my computer the drive
icon shows RING_SCN G:\