Posted by sailplane on
URL: https://www.es-forum.com/Turned-off-Laptop-still-emits-something-tp4035037p4035046.html

Karl wrote

Does your clock still show the correct time after you turn off the battery?  Because the clock oscillator might still be running.

Yes, this laptop has a small bios battery like a watch battery. I don't have problems sleeping though even with that running, and for sure it is running as you say, because the time is being kept.
It's just when I forget to go in the bios and disable the internal battery that I notice the problem.