Jeff, this could be a problem with the motherboard itself. You can try a BIOS recovery to the previous version 0044 and check if the issue persisted.
I would recommend you to do a Clear CMOS removing the battery for a couple of hours. Also, remove the power supply.
Install the battery and load default settings on the BIOS.
Unfortunately, this motherboard is out of support and I think it is already out of warranty in order to offer you a replacement, but please try the troubleshooting I gave you above.
Thank you for your quick response.
It would be inconvenient, for my customer, to remove that system. I will not do anything until the system acts up again. Then I will then follow your suggestions.
No problem Jeff, please just let me know if you need anything else regarding this behavior.
When the BIOS is in Manufacturing Mode, some additional commands are enabled in BIOS Setup; that's all. You can effectively ignore this message; it won't affect O/S operation...
Thanks for the explanation. Being curious: why did it suddenly appear, what are the "additional commands," and how is it turned off? Or better yet, where can I find documentation so I can read all about it.