Esp Key For Startup Menu

Woke to HP splash page saying press the escape key for startup menu. Only escape key doesn't open said menu

None of this f keys are functioning and PC is stuck on this screen. I pulled the CMOS bumpers and took battery out and unplugged it held down power button. Still same screen on restart.
No clue what to do now
WR

 

Update:
I reset my mem, and put in a new mobo battery. Crossed my fingers. Same splash page.
I then disconnected my HD and turned it on. Same splash...no message about lack of a hard drive
this does not bode well

 

Hello
Is a desktop.
Sorry for the lack of info about my pc. Since I cant access my desktop I didnt have access to my dxdiag file.
And I dont know my specs by heart.
When I said that the funtion keys werent working, I meant that I wasnt able to enter repair mode. Keyboard powers on but the pc doesnt respond to any keys being pressed.

And about the bumper. A buddy suggest that I try to clear my CMOS in the manner listed here:
https://www.gigabyte.com/Support/FAQ/1758

Thank you I really appreciate you taking the time to find the info about my pc from previous posts. Not many people what have bothered

WR

 

Jumper.

 

my buddy called it a jumper. When he was helping me find it. I was calling it -this lil blue thingamajig?-
I was scared to even touch the thing.

 

Windows 10 64B

 

Updating my situation. In case someone finds this helpful.
So I was pretty sure that my mobo was the issue and was about to haul my out rig to the place where all my old pcs go when they die.
But I decided to try again after plodr said that a recent update was causing issues.
I plugged it up and got the same splash. Escape key was still not taking me to the start menu. I pulled the cmos jumper and touched both pins with a flat head screwdriver. This time all my fans stopped. (That hadn't happened when I tried yesterday)
On reboot I now got a message that I didn't have a hard drive. (Id disconnected it yesterday while testing, hoping to get this very message.)
Upon reconnecting my hard drive and rebooting my system I got the same splash screen, but this time it wasnt hung. And my pc immediately went into Windows Update mode.
After the update I was able to log into my pc again. So far it seems stable and without further issue
Thanks for all your patience guys!

WR