Can you answer this please.
can you tell us what options are listed in the BIOS
Just a FYI, you do not boot into the BIOS you access it, please don`t think that I am being pedantic but using the incorrect terms can be confusing and that was why I said in answer to;
I can boot into the bios but the last known good configuration didn't do anything. When I try to boot into anything it goes back to the acer screen and then the Windows XP screen then black.
I can get into BIOS but can't boot to anything there.
Not sure what you mean by you can`t boot to anything there,
Are you completely locked out of the computer altogether now as this will determine your options and especially if the services of a reputable tech store are required.
Somehow, I did manage to set a HDD password