Laptop hangs on AC power off

Hello

I’ve already tried three different distributions of LINUX (Ubuntu, Fedora, OpenSuse) and always same errors occurs. Everything looks fine but when i unplug AC power cable, after while fun starting to run at full speed and notebook hangs. I must power off it by IO switch then, it’s only one way how to reboot it. It seems like some nontypical hardware configuration.

Here is notebook model: Toshiba Tecra M11-107

Thanks for any hint how to solve this problem.