mmmmmmm you should be able to get into the bios with the ps2 keyboard, so i'm at a bit of a loss here.
i know with fast boot and windows 8 os some people say they can't get into bios using the F keys because you need to be lucky and time it just right, so they need to use the advanced startup options in the win 8 os to get access to uefi but i've never seen or heard of the same thing happening with a windows 7 pc myself, yet fast boot is the only thing i can think of that is making it hard for you to enter the bios/uefi again apart from a motherboard that has major failure somewhere.
check the ps2 keyboard on the working pc please, if it works on there then try again on the broken pc.
soon as you hit the power on button keep tapping the F2 key until it either shows you the no bootable device error message or takes you into bios, like i said try it a few times if it doesn't work the first time.
if you still can't get into bios then i'm afraid there is nothing else i can think of that you can do except take it to a repair place to be looked at.
on second thoughts you could try a pot luck option.
what os is on your working pc? if it is windows 7 as well then you could try creating a system repair cd on that :- http://windows.micro...tem-repair-disc
put it in the broken pc then restart it and with luck even though we can't get into bios to set and check things, removing the battery should have set the default options where you disabled all bootable devices to enabled again so the cd will boot.
if it does boot up use the startup repair option and see if that will fix things for you :- http://support.hp.co...ument/c02058933
pot luck the hard drive is working and the problem is just a corrupt os that this can fix for you even though you couldn't check things in bios/uefi anyway.
all instructions are in the links for how to create and use a windows 7 system repair disk.
oops missed your post iammykyl but believe colleen already tried the options to reset cmos before she bought the ps2 keyboard.
can you think of any reasons why she is unable to get into bios using the ps2 keyboard?
Edited by terry1966, 09 April 2015 - 07:43 PM.