Satellite A200 crashing when moved or when CPU usage is too high

Question

Alright so fairly recently my Toshiba Satellite A200 has started crashing whenever I pick up the laptop or run any processes that take the CPU usage up to around 100%.
This essentially means no 3D rendering or games and no running Photoshop and iTunes at the same time etc. Here's the kicker though, it only happens when the laptop is plugged in and not when on battery power alone. I've already tried using a different AC adapter and I cleaned off the hard drive for a fresh install of Windows 7 neither of which fixed the issue. I even went so far as to update the BIOS.
I am not fairly determined that this is solely a hardware issue but I was wondering if anybody had any suggestions as to which part may be acting up on me. Like I said it still works like a dream when running on battery power.

Answer 1

hi Cyborg771,
it seems to be related to the ac-in jack..
is there any change or symptom when moving the ac-plug?
also the circuit that is managing the power supply could be the "bad guy"
if the contact to the powerboard isnt good, the circuit starts to check the state every 10ms..this will slow down your machine...
how old is your notebook?
still got warranty on?
a solution may be to solder/fix/change the jack
or see a servicepartner