gx1_man :
I understand you are knowledgeable in your field but this person has said they are a newb so maybe they don't know what info you might want to know or how to find it. This might be intimidating for them; maybe you should suggest the info you need?
yuki_JX
when you "changed" your bios do you remember setting or typing in a password or altering a password?
You say you can't open the bios, is it asking for a password when you press del, (or F2 or whatever) to enter the bios setup menus?
If it does not enter the setup menus are there any error messages?
Are you tapping the Del, (or F2 or whatever) key while your system starts to enter the bios?
Pleas describe exactly what you press and when to try to access your bios.
Steve