The memory was tested, it's not the memory.

It should be the power supply, since I have no virus, and no trojan, the firewall does not refer to any incoming or outgoing transmition, the port dump does not either ( yes port dump ) and MacAfee says I'm bug free from virus, the only ones that could be there are does versions of special servers of Sub7 or some quite unknown thing.

Yesterday I had a strange reboot, I was surfing, and on IRC at the same time, and the machine just shut down mirc and IE and did a logout, the next screen was the login screen, and it was so fast I first did not understand what had happenned.

My friend told me it was the fastest logout he'd ever seen, not a second long.

The power values I need are does of the core of the CPU and of the external parts.

Thank you all