Messiah2: on-off? Games don't load

[Serpent]

ok, got my ps2 back from the installer

Fired it up, put dvd-r back up of timesplitters2 in. It worked fine, played the entire cut scene. Then it froze when trying to load the first mission.

Then I tried GTA: VC: game wouldn't boot. Stuck at system config screen. Same for silent hill2, smackdown4.

All these games are on TDK dvd-R, burnt at 2x with Prassi.

Then i tried CD-R. Got the red screen saying the disc is not a ps2 disc.

HELP!!