If so it needs your BIOS password, which you should already know if you have configured the PC to require it upon booting. Or is this a secondhand one you've bought and cannot get past this screen?
If the latter then you can reset the thing by opening the computer up and removing the CMOS battery (tons of help online - search Google for it, there will even be YouTube videos if you need them) for ten minutes before putting it back and starting again.
Some models have us call in to reset that password if methods you find on the web don't work.
Be ready to prove it's yours since when the maker does this it's a form of theft protection. The makers sometimes get flamed over this but hey, if it's yours legitimately, it's like you locked your keys in your car and pay a little to the locksmith.