|"I had removed the bios batteryut but nothing hapens"|
That must have been a real chore to do from a laptop.
Sounds like another sizzling product.
Ask the person who sold it to you what the bios password is, other than that, contact the manufacturer and be sure to have papers stating you are the owner.
If those 2 don't work, you may as well use it for a small boat anchor, because bios passwords on laptops cannot be cracked...it is a safety feature to prevent theft.
Some HELP in posting on Computing.net plus free progs and instructions Cheers