Why does virtualbox reboot system after startup?

Question

virtual box

Good day, such a problem with virtualbox on windows, when I start it, my
system reboots, how and where to start looking for a problem?

Answer 1

disable the Windows component called Hyper-V.

Answer 2

Run the eventvwr.msc command, see what happens at this moment. Most likely there is a clue. And Control Panel - System - Advanced Properties - Download and Restore: Disable automatic restart. If a blue screen pops up, you can find out what the problem is by the error code