[newbie] The system freezes after 2-minutes

[Tamer Mostafa Abu Elfadl]

I have installed linux mandrake 7.2 on the logical partition hdc5, with
swap on hdc6. The system runs OK at the first 2-minute. But when the mouse
or the keyboard are left untouched, the system freezes and I have to
hardware reset the system. I tried to install linux multiple times but the
problem persists.
Does anybody can help with that?

Tamer