3UR17AA <<<??? 2 years old?
so the screen is 100% dead, after OSD?
the bios hot key is dead.? forget windows, what about BIOS pages.
this AIO has and option of GPU card, does hit have that?
I guess you mean OSD name for bios?
OSD is only inside monitors.external.
or OSD means the HP splash screen
F2 diagnostics work? and pass per the HP manual?
removing that coin cell first. was a bad idea, now all bios setting are lost, and now must be replaced, bit by bit.
power on the PC and hammer esc. key
this is the bios hot key, and then see the other keys prompted
F2 is diagnotics
the manual is crazy hard to understand, (even show things that do not exits)
HP offers no service manual here. sad that.
better Esc + F2 diag, in order.
this fake desktop AIO, has huge 280 watt power brick pack/.
that must be only used for this PC and not mixed up with others.
and connections checked to it, carefully
but the ESC key i first, if this makes BIOS work then we work from there as did kill all BIOS settings at coin pull.
and the 2 year old coin was good.
good cluck fixing any AIO PC.
this the ESC menu. HP classic.
f2 is first. diag
then if diag passes
next is F10
we then , in the F10 main bios pages do this.
do the bios reset. to factory defaults.
then set time and date
and any instances of PXE to off (disabled)
last the boot order pages, set to windows manager, first this new name means boot drive, (UEFI)
exit and cold boot the pc POWER BUTTON HELD FOR 10 Seconds and released.
FIY, the F11 key is the windows 10 reload image, feature. (avoid this on a 2 year old PC, windows is ok but bios settings are lost.