

PC does not boot directly
My aunts PC shows the first picture when turned on. After pressing F1 she gets into the Bios menu and then (without changing anything) she presses F10 and Windows will boot.
I have no clue why, clearly the SSD with Windows is recocgnised in the bios menu and set as Boot priority, but not during initial boot up (if I understand the text on the first picture correctly).
Thing is also, I visited her on this weekend and while I was there it does NOT happen. Today she send me a picture that it happened again.
I just noticed that the date is wrong in the picture of the Biosmenu and asked her to look at it the next time it will happen. I can say for sure the systemclock is correct once windows is booted.
May the battery of the mainboard be empty and cause this problem?
What else are possible reasons/solutions?
For information when she is done, she shut down the PC and turn off the socket distributor.