recently my laptop ran out of charge, and when i turned it on it beeped a few times and asked to set date in bios. but when my android phone has powered off suddenly, it successfully booted but with a nonsense date many years ago. why does a PC-laptop require setting date before booting the full OS?
I am fairly certain that I have had a PC before that had exactly the issue that the CMOS battery ran out. It was able to boot just fine, I just couldn’t get it to connect to the internet properly. Took me ages to figure out that the date and time in the OS were completely wrong, because I never really use my computer as a clock anyways.