Why might BIOS values not be saved and display as manufacturing mode?

The indication that BIOS values are not being saved and that the system displays as in manufacturing mode typically highlights an issue with how the BIOS is configured to operate. When the systemboard jumper is set to the SERVICE_MODE state, it allows temporary access for servicing but prevents any permanent changes from being saved to the BIOS settings. This is useful during manufacturing or maintenance but can lead to the observed behavior where BIOS configurations do not persist across reboots.

In this scenario, switching the jumper to SERVICE_MODE is intended for diagnostic purposes, meaning that any changes made while in this state will not be recorded after the system is powered off. Thus, the correct answer accurately explains why you see the BIOS values not saved and the manufacturing mode display.

The other options do not directly correspond to the inability to save BIOS settings within this context. An outdated BIOS version typically does not prevent saving configurations but might lead to compatibility issues with newer hardware or software. A corrupted hard drive typically affects the operating system and data storage rather than BIOS settings specifically. Similarly, a power supply failure might result in broader system instability or failure to boot, rather than specifically affecting BIOS value retention.