Help!!!! i need to factory reset my HP compaq 6720s as i have forgot my windows login password and i don't know how to do and also a power-on password keeps apearing and everytime i try to type it in it won't let me??? so please can you help!!

Lost Windows password:

• Log in as Administrator (try safe mode if you don't see Administrator).
  
• Login as other user (if other user is availible) and manage users.
  
• Reformat computer.
  
• Use 3rd party software to remove password. Like http://www.top-password.com/reset-windows-password.html
  

Here I collect some popular solutions to help reset HP laptop password if your laptop installed Windows system such as Windows 7/Vista/XP.
Solution 1 Reset HP laptop password by another user account with administrator privilege.
Solution 2 Reset HP laptop password with Offline Windows Password & Registry Editor.
Solution 3 Reset HP password with professional password recovery tool.
If you do not have another administrator account on HP laptop or you have little experience in Windows or LUNIX operations, you can use Windows Password Rescuer to help reset HP password without lose date. This software was provided by DAOSSOFT corperation, it supports HP laptop password recovery in Windows 7/Vista/XP and HP computer installed Windows 7/Vista/XP/2008/2003/2000.

HP Spare Key can be used to reset BIOS password. It is provided by HP Corporation. So when you forgot BIOS password on HP computer, just download it and get perfect BIOS password reset.
How to reset HP bios password with Spare Key or other ways?

Please refer to reset HP Elitebook password. In this passage, you also can learn how to reset Windows administrator password easily.
http://www.isunshare.com/windows-7-password/reset-hp-elitebook-password.html

I forgot my power-on password hp6720s what is the solution?

1. See if you can log in as the Administrator, from there you will be able to reset the password via the control panel

If you cannot log in as the Administrator then download (on a another computer) "Hiren's Boot Disk". Burn it to a CD and boot up off of the Hiren's Boot Disk on your computer that is locked. Go through options and you will find several password reset tools. Use these tools to reset your password reboot the computer and you will be in.

Please rate and vote if this helps.

A week ago, I forgot the Windows login passwords. Finally, my workmate Harry advise Windows Password Seeker. This beneficial software successfully assist me access to Windows. You could Search windows password seeker or visit their official website: http://www.passwordseeker.com

Do you want to know about bios power-on password reset on HP 6720s?
Turn to Reset HP BIOS/Administrator Password
It shows you how to reset HP BIOS password with SpareKey, and how to reset HP administrator password with effective Windows Password Genius in just 2 minutes.

Get a video learn how to use it:
http://www.youtube.com/watch?v=-vrVcFaUATg&feature=youtu.be

This all-in-one password recovery software will surely help you out. It is capable of resetting forgotten or lost Windows Administrator login password, and recovering lost password for multiple web browsers, mail clients, FTP clients, chat messengers etc. HP Compaq is supported. Good luck!

read detailed article on how to reset password on Windows 7 laptop!

u have to rset your bios .oen the backsie of laptop.remove battery .u also see ram. there .
then u see cmos on chip set.remove it for 15 min.then attch again.
then it reset and not nedd sany password.
try.