The laser is on its last legs.
When the machine was not powering the modchip the laser had just about enough power to boot the originals, but when the modchip was on then the laser could not handle the originals and backups, it seems like the laser was not receiving enough power from the PS2 to boot the games!
Thats why when you added a much stronger laser into the machine then it had absolutly no problems booting the games!
The other laser was ready to die
Homer Simpson is a Role-Model for everyone!.
PS3 40GB, upgraded to 500gb w/ TRUE BLUE, Had original JB
PS2 v7 and v12, both with Authentic Matrix Infinitys,
Wii D2C, D2Ckey,
Nintendo DS Phat, Supercard DSTWO and DSONE,
Atari, Nes, Snes, GBA, PSone etc etc
I am Evil Homer, I am Evil Homer!