Ooook, I think this one might work, you should unscrew the pins, open up your PC, remove all the bigger parts as possible: battery firstly, HDD, DVD device, and etc. Try to get to the mainboard and then look for a battery, which supports system time and BIOS memory as well.. So, remove this battery carefully, wait for about 30 seconds, and plug it back.. It might reset your BIOS and remove password.
If you'll do this, inform me if it worked out!