BIOS password removal

Removing the motherboard's battery and placing it back after 10-15 minutes is the best solution.
You can also try using the jumper that the motherboard has,and set it to clear the BIOS settings.

First turn off the computer of course,and get the power cable out of the 220V connector.Just to be sure.
Than open the side of your computer case and find the battery on the motherboard.
It looks like this,on 99% of motherboards:


Now get a small stick,or if you have small fingers,you can do it using them.
So get the stick/fingers and push the little clip on the battery-holder back,so the battery will pop-out.


Now,when the battery is out,leave it on a safe place where it can't get hurt.
Put it back after 10-15 minutes on the motherboard.
Just place it on it's place,and push it down slowly with your finger.Don't press it strongly.


When the battery is fitted in correctly,turn on the computer.
If you did everything fine,the BIOS password will be no longer there.
But all the BIOS settings will be set to default,so you'll need to set them again