Cmos Battery Failure Intel Nuc [upd] Jun 2026

: The system may hang or require several minutes to display an image on the screen after power-on if the battery is completely dead. Performance Throttling

When you shut down your computer and unplug it from the wall, the CMOS battery ensures that the BIOS settings are retained and the Real-Time Clock (RTC) keeps ticking. Without this battery, your NUC would forget the date, time, boot order, and hardware settings every time you turned it off. cmos battery failure intel nuc