u/Present_Mail_4271

Hi everyone,

I have Lenovo ThinkPad E15 Gen 4. It has always worked and charged normally.

However, today, when I powered on my laptop, I suddenly got this BIOS warning

I have never seen this message before.

After pressing ESC, the laptop boots normally.

I'm wondering:

• Why would this message suddenly appear after months of normal use?
• Could this be related to a BIOS update or a battery issue?
• Is there anything I should check or do?

Any advice or similar experiences would be greatly appreciated.

Thanks!