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?
The BIOS on that is clearly a bit odd, I haven’t seen that as a requirement before. That said, the BIOS battery is probably dead. Replace that and it should fix the issue.