Dual layer original games will not load.

[maxxxpain]

I have a playstation 2 model number SCPH - 30003 R
It was the machine that came in the Metal Gear Solid 2 pack.

I have had no serious problems with this machine since i got it a few years ago and i had the messiah chip installed way back then and it has worked so far. It has always loaded original games and films with no problem and also booted back-ups.
But recently i noticed that a dual layer dvd game - God of War - would not boot at all. (Original copy of game not back-up)

I am wondering is this problem linked to my machines board or laser etc... or possibly that the messiah chip is stopping the dual layer original copy from loading because when the chip came out there was no dual layer games?

Im not 100 percent sure. I was thinking it must be the machine itself. Has anyone had problems with their machine booting original copys of dual layer games?

Also does anyone remember what version this board is? I have not really been reading up on playstation mods and back-ups for a while because everything was working until this dual layer game would not load.

Thanks for any info.