Hacking/Breaking BIOS Password
For Desktop:
Step 1: Unplug the power cord from the back of the computer. Be sure that you ground yourself before touching anything inside your computer, otherwise you might short a component.
Step 2: Find the CMOS battery, i will be round and silver colored.
Step 3: carefully remove it. wait for a while. plug that CMOS battery again.
-you have successfully removed the BIOS password
For Laptop:
you cant simply remove the cmos battery. in order to overcome this we are going to http://bios-pw.org/
this site will generate bios password for your laptop.
Step 1: Provide invalid password for 3 times.
Step 2: it display the system disabled status with checksum.
Step 3: copy this checksum and provide this checksum in http://bios-pw.org/ it will provide you the bios password. some time it requires your laptop serial number to provide your bios password.
Note: if the above process fails you need to provide your laptop to service center or if you are a well expert then you can remove CMOS battery and plug it again.