Satellite P10-554 shuts down after few minutes and I can not reboot

hello,
i hope anybody can help me with my satellite P10-554
when i start the notebook everything works fine a few minutes. than the monitor turns into black and the notebooks shuts down suddenly. i cannot reboot it, when i push the start-button nothing happens.
i have to wait for about an hour and then i can start it up again, but he works just a minute and shuts down again !
help me please, cause i need my notebook to work !

I did that many times. First you need a special torx-screwdriver. Then you can remove the cover over the fans. Than take your vacuum-cleaner and remove the dust. Take a brush or somethin else to remove the dust from the fans. Then, you need to remove I think 2 big screws, now you should hold the cooling falance in your hands, the one with the fans. Clean that properly.
After that you can remove the copper-cooler, with 2 more screws I think, but it is pretty obviously. Now you should see the blank cpu with lots of heat-paste on it. I dont know why they put so much of this stuff on it from toshiba. So get a better one like Arctic-Silver or sth. My advice is to take the CPU off (one screw on top as far as I remember) and clean the surface.
The copper you can clean under water, but dont use sth that could scratch the surface. After that let it dry good. Now just put the CPU back and fix it with the screw again. Take a !litte! heat paste and put it properly with a paper all over the surface of the CPU, but remember, just a little! Then follow all steps back, dont forget to clean the graphics-chip as well and put some paste on it. You can see which it is when you look under the fan-cooling-falance, there should be a rest of heat-paste. Everything back to its place and voil*, a nice, cool clean notebook. By the way, I replaced even the fans.
If you need further advice, just ask!

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