back up problem with m2

[TRDragster]

To charlie or any experts,

I have U.S v5 with messiah2 and I am having problem in booting backup games. the ps2 recognized the cd and it goes on the ps2 logo then it goes black screen, some of the games goes to start screen but then hanged, one of the game just say "loading" with background picture of the games but stop responding. I have other back up with different brand and works fine. Do you think i need to calibrate my laser or weak? or is more of a cd media problem? thanks in advance...


TRD