Please try one of those solutions : First Can you make sure the CAPS lock and NUM lock keys are off, then try the password *****'ve been using
Solution 1 : Using the Administrator Account
1- Start or restart your computer and press "F8" while the computer boots up. The Advanced Boot Options screen appears.
2- Scroll down to "Safe Mode" with the arrow keys on the keyboard and press "Enter." Your computer starts in Safe Mode.
3-Click on the "Administrator" account that appears on the Windows logon screen
4-Click on "Start" and "Control Panel".
5-You will enter "All Control Panel Items", then click" User Accounts"
6-Then click"Manage Another account" as following.
7-Choose the account which you want to reset the password.
8-Click "Change the password" as following
9-Type a new password ***** that account.
If you don't see the Administrator account then you will need to creat one :
restart your computer and press "F8" Scroll down to "Safe Mode with command prompt", a black box will appear, please type :
net user Administrator /active:yes (and click enter)
now restart your computer and follow the previous steps.
Solution 2 : Bypass Windows 7 password
1-Insert your windows 7 disc and restart your computer, and Boot off the Windows disk and select the “Repair your computer” option from the lower left-hand corner.
2-Follow through until you get to the option to open the Command Prompt, which you’ll want to select.
3-type in the following command :
copy c:\windows\system32\sethc.exe c:\ (click enter)
copy c:\windows\system32\cmd.exe c:\windows\system32\sethc.exe (click enter)
4-Now reboot the computer.
5-Once you get to the login screen, hit the Shift key 5 times, and you’ll see an administrator mode command prompt.
6-type the following command : net user LOGIN_USERNAME YOUR_NEW_PASSWORD
example : net user jack acer2015
7-Now you can login with your new password
If you don't have the windows 7 disk please watch this short video on YouTube : https://www.youtube.com/watch?v=qWLZPsyp0Gc
Solution 3 :
Go to the following website : http://www.hirensbootcd.org/download/ scroll down and download the file name Hirens.BootCD.15.2.zip (Make sure you unzip this file) Now burn this file into a blank CD or DVD, you can use imgburn software to burn the file : www.imgburn.com after you burn the file, insert the Disk then follow the step by step instruction in this tutorial video : https://www.youtube.com/watch?v=HoYv1H6-E98
(the video is for windows 8 but you can use the same instructions for windows 7 or other version of windows)
Hope this help, if you need further help please let me know and i will gladly continue to help