I'm not sure what's causing this and I have no ability to repair the system assuming it's a problem with the board. It's a bit odd that it freezes at different times, each time. Sometimes it's at the screen where it has the PS2 startup noise. Sometimes it's within the OPL menu. But it happens repeatably. My question is, what do you think the problem may be? Is it the PS2? Could it be the a/v or power cables? It's a fat PS2 with a 3.5 SATA hdd inside. I tried taking the memory card with free mcboot out of the system, and I discovered it can still freeze going off of HDD mcboot. Please help and thanks for reading.