How to Reset Password on Acer Windows 7 Computer?

I locked out of my Acer Windows 7 laptop! I am working on Acer computer with Windows 7. It's locked me out at the password screen. I am pretty sure I am using the right password, but keep getting a message that it's the wrong password. Without the ability to get past the password, I cannot do anything. Is there anyone who can give any advice to help me retrieve my administrator password on my Windows 7 Acer and then get back into the computer?

Acer Windows 7 Password Reset

Well, to recover my Acer Windows 7 password, I have got and tried ways below:

Method 1, With a Windows installation disc or a System Repair disc to help

Step 1. Get a Windows 7 installation disc or any bootable media that can support us access to Command Prompt. If we don't have one, go to another available Windows 7 computer and create a System Repair disc by pressing the WinLogo+R keys and run RECDISC.

Step 2. Set computer's BIOS to boot from the disc. Access the Command Prompt via the Repair computer - > System Recovery Options. Type the following commands:
c:
cd\windows\system32
copy sethc.exe sethc_orig.exe /y
copy cmd.exe sethc.exe /y
*Note: If you see a message saying "The system cannot find the path/file specified.", it means your Windows is in the D partition, not C. So instead of typing c: above, change it to d:

Step 3. Remove the disc and restart the computer. At the log in screen, press the Shift key repeatedly at least 5 times. When the Administrator Command Prompt appears type the following command:
net user "login name" *

Just keep it blank and confirm it. If you see the message "The command completed successfully", close the Command Prompt. You should now be able to log in to the account without a password.

You need to undo the changes that you have made to the SETHC file after removing or changing the Windows 7 password. Otherwise, somebody else can use the command prompt to change your password or even lock you out again. This cannot be undone after login Windows 7. So you have to boot again from the disc, access the Command Prompt and type the following:

c:
cd\windows\system32
copy sethc_orig.exe sethc.exe /y

As the above, if the path is not found, change the c: to d:

Method 2. Get Windows Password Recovery Tool to reset Acer Windows 7 password 

If password is not strong enough and we can try Ophcrack via site: http://ophcrack.sourceforge.net/ . Just burn it to a CD or create a bootable flash drive and boot from one of them.  

If Ophcrack can't find the password, the next option is to simply remove the password. The software that comes to mind is the Windows Password Recovery Tool which can do the trick. Just 3 easy steps:

Step 1. Download Windows Password Recovery Tool, install it and run it on an accessible pc from website http://tinyurl.com/windows-passwords-recovery .

Step 2. Burn the iSO image file to a blank CD/DVD/USB Flash Driver to create a password reset disk.

Step 3.Set locked Acer Windows 7 computer start from burned disk after BIOS setting. Then restart Acer computer, recover lost Windows 7 password within clicks.

Here's a Youtube tutorial on Acer password reset for Windows 8/7/Vista/XP if you are interested: http://youtu.be/KFtEjSqldBY .

If you forgot Acer Windows 8 login password, please read topics: 

How to Reset Acer Laptop/Desktop/Tablet Windows 8