I'm not even sure I understand the question. What does the BIOS have to do with installing an audio driver?
If you want to clear a BIOS password, you could look on Compaq's website for documentation - but that shouldn't have anything whatsoever to do with using a sound card.
I had a professional work on my computer and they said I would need to know the BIOs password in order to install something that isn't plug and play. I need a sound card so I can hear from my speakers
Okay, that makes sense. To clear a BIOS passwod on a Compaq computer, you'll have to ask Compaq. I'd check their website - they should have a product manual with instructions on how to do that.