Laptop restarts (even in bios)

Aug 28, 2020
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Hello, I looked everywhere and found no solution
I have a Toshiba laptop that I have always been using for over 4 years and now it has restarted on its own.
I already disconnected the HD and even then restart (when I leave it stopped in the setup)
already tested the 2 memories
already removed the video card (restart in windows and setup)
already reset the bios by removing the battery
already tried to format, but it restarted in the middle
already cleaned and applied thermal paste to the video card and processor
the only thing I haven't seen yet is if there are any crooked processor pins

Sometimes it restarts and comes back without video, sometimes it restarts and comes back but stops at the motherboard screen on the line where it identifies usb drivers, but I removed the front usbs cable and nothing too...