What do you need the Bios passcode for..?
There is an option that you can use..
Simply remove the casing to the computer, and look on the chip board, and you should see a battery.
Remove the battery and leave the computer unplugged and turned off for 20 minutes.
Then reinsert the battery and boot the computer back on..
this should hopefully remove the bios password prompt..

And do you know what Bios your box is using..?
Try and find out and PM me as i've got a list of default Bios passwords..

cheers
stacy