The device suddenly cut off the power twice

rmarion59

You may try the CMOS reset and check if memory is well seated. It is rare but sometimes a weird App may be running in the background with special shutdown/power off settings (I won't count on this one).

jibunnokage

Just for reference for how you can diagnose these issues:

Often ask support for a new power supply.  If you can use a multi-meter?  Monitor the power supply to see if it is stable.  I have seen many of these issues come back to the quality of the power supply is the issue.  A bad power supply often works well as long as it is not pushed, but once you put demands on it, even minor, issues.  Been this typical issue many times over my 30 year IT career.  This could also be temperature related, but it could also be component related, you may have a bad capacitor on the main board.  But the place to start is to check the power supply and make sure it is stable and consistently, as you do things on the system, that draws more current.  The issue is CURRENT load NOT voltage.  You can have a power supply that is consistent voltage, and horrible CURRENT loading.  It is the change in CURRENT demand that can reveal a bad power supply even if  the voltage level seems correct.  Of course, if the voltage level is inconsistent, that is a problem obviously.  Remember, when BeeLink factory tested your mini PC, they did it with the DEFAULT configuration, so it clearly could have passed with 32GB RAM, but now that it has 64GB RAM things are odd.