Problem with ps2 games

Firstly, Hi to all, becouse its my first post/thread here. (And sorry for my bad english)

For about a year I don't use PS2. Earlier I thought that problem is the laser-lens, so the console lay a while, then I read that it can be launch game from HDD-USB. As one of the few I have a memory card with software from MEMOR32 Memento-Team. So I got down to action. I've lunched USB Advance and run back-up of Half Life. Like everything ok, start the game, but when I start "training" the console hangs. The same with other games - go intros, menus, but you can not play. I checked the other games in the DVD and HDD-USB: Gran Turismo 4 (the original hangs at the very first inscriptions. GTA San Andreas hangs when loading the game (where you can hear the specific sound of GTA:SA). So now I know that is not defective laser , because the problem is the same for HDD and DVD. could anyone help me solve this problem? If there is anything unclear, please ask.

Moreover, I've borrow PS2 from my friend, and those games works propertly from DVD and USB-HDD.