I can unlock my acer extensa 5220 bios password

The most common way is to remove the CMOS battery and leave it out for anything between 5 minutes to an hour then replace it and restart.
You will probably have to open up your laptop to get to the battery.
You may find some codes to put in but they very rarely work.

You will find what you need by down loading the CD. good luck.

http://www.hiren.info/pages/bootcd

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http://majorgeeks.com/Bios_d235.html
Save, delete, and restore your BIOS settings or
i have used this software and no that it works although you might have to get a computer with an internet connection to download and burn it to a disc

http://majorgeeks.com/download.php?det=5710
UBCD4Win is a bootable CD which contains software that allows you to repair, restore, or diagnose almost any computer problem also has a bios reset tool which can remove your password and bios password
you will have to burn it to a disk as an ISO then you will have to boot from the disc During the boot process you will see on the screen to press a certain key to enter setup Press and hold that key during the boot up process to enter BIOS the scroll down to advanced bios features press enter change your first boot device to cd press escape then press f10 to save to cmos to restart (note after you have removed your password you will have change first boot back to your hard drive)

how do I unlock the bios password acer extensa 4620

how to un lock my laptop extensa 5220

go to http;//tim.id.au/laptops see if he has your service manual to show how to clear the bios password under jumper location in manual

Hello,

To boot from CD, simply start your laptop and then press F12 immediately, and you will be given boot device options, with out having to get into your BIOS setup.

Thank you for using Fixya,
Kenneth.

The bios is accessible by pressing F8 (IF Windows) after starting your computer.

Try On bootup you should either Press 'DEL' or 'F1' or 'F2' to enter the BIOS

if ur taking of how to change the bios password...den goto bios setup and reset it...if u have forget the bios password....only by removing the c-mos battery and inserting it again the bios password can b reset..