Laptop beeps and shut down instantly

[grahammechanical]

The motherboard manual might have a section that explains what the bleeps mean.

Regards

[Doug S]

For your i7-7820HK processor, I would run turbostat in some terminal always, suggest this, or similar, command:

$ sudo turbostat --Summary --quiet --show Busy%,Bzy_MHz,IRQ,PkgWatt,PkgTmp,RAMWatt,GFXWatt --interval 6

For the comment about it being 50 degrees please be aware that processor package temperature can change extremely fast. I have measured (oh darn I can't find it now) over 100 degrees per second. I am saying it is easy to miss a thermal event entirely if only casually observing temperatures. As a test try disabling turbo in BIOS. This will keep temperatures lower and timing margins wider, and is perhaps why you got further on battery sometimes.

[him610]

While my daughter was using my wife's System76 laptop today, I heard it beep (loud beep). I had never heard it beep before; however, she explained it was triggered by a low battery. Sounded reasonable to me.
+Post #11 by grahammechanical