I'm not with Laminar Research, just a fellow simmer in the UK.
As I am also a qualified computer technician, I would say that it is highly unusual for any software application on its own, to cause a complete PC crash to the point where it has to be rebooted.
Consequently, I would venture to suggest that there is something else going on here that is likely to be hardware related.
To begin with therefore, would you be kind enough to confirm your hardware and operating system specifications and whether or not you have had a total PC crash with any other type of application?
As far as hardware is concerned, I am particularly interested in what type of graphics card and power supply unit you have installed, but information on your motherboard, CPU and RAM memory would be required also?
Secondly, could you please upload your X-Plane 11 Log.txt file to this post, so that this can be reviewed for any other possible crash indicators?
If you're not sure how to upload the Log.txt file, please click on the following link to view some instructional PowerPoint slides that I have prepared for this purpose :-
Should the answers to the above not provide any indicators one way or the other, then I would further suggest that you download some 3rd party software to 'stress test' your PC and I can advise on this later if required.