On 23/09/2019 15:08, Dave Plowman (News) wrote:

Just a quick sanity check - are you testing this with a hard drive or
other boot media connected?
I've had hard drives with corrupt boot sectors cause this symptom in the
past...

With absolutely nothing connected, saving the BIOS page results in not
being able to even get to that again. Except by removing/replacing the
battery. Then the whole cycle repeats.


Fair enough.

Sort of smells like a motherboard power issue, as others have alluded
to. Don't know how far you'd get trouble shooting that though.