My PC during normal use (web browsing for example), sometimes crashes and then restarts indefinitely until I press the shutdown button on my PC. After the first reboot it shows a black screen with the following message:
What message 
? By the way just by reading web browsing I yet think to the mess of Firefox that I have, sometimes it actually stops responding. When I write for long times it becomes unresponsive. Do you mean something like this or you're certain that the problem comes from the system instead of the browser only?
Hi and welcome to the forum. We see no "message" attached to your first post.
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