How to crack or change BIOS password???

• BIOS password is a trivial issue that if you are the device owner and can take your time.
• First, there are large lists published to the internet of those master codes you are referring to, but more importantly
• THE BIOS password is stored in a volatile memory that is supported by a CMOS battery (a Little watch battery looking thing the size of a washer.)
• First you need to Remove your laptop's battery, then AC-adapter cord and finelly  pen the laptop and remove the CMOS battery.
• Attempt to power it on a few times (Now Hold the power button for 50seconds or so, repeat) 
• This is usually enough to drain all the residue charge from capacitors and finally wipe away the volatile memory. 
• If it fails, do it again, and wait 24-48hours before putting any power back to the device
• This is how you can change bios password easily...