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You have to enter the password to be able to use the computer. There is no way to recover the password. Passwords stop other people from using your computer. If there was a way to bypass it, passwords would be absolutely useless in protecting your computer from unwanted people gaining information about you.
The easiest way is contact the Previous Owner since you say you purchased it from them.
OK, if you are running Windows 7, Microsoft tightenedsecurity on it so you've got to have a password reset disk which 99% of thepeople who own laptops with windows 7 fail to do. It should be one of thefirst things you do when you buy the laptop. Otherwise, you're faced withreinstalling the Operating System or possibly doing a System Recovery.
If you're on Windows 7 or Vista try this:
Turn off the computer, then hit the power button to turn it back on andimmediately start hitting the F8 key repeatedly until you see the Safe Modeoption. Select SAFE MODE and let the computer boot up. When it getsto the User Login screen it will show the Administrator userid and the useridfor which you forgot the password. Sign in as the Administrator (hopefullyyou didn't put a password on it and forgot it too). Once the desktopappears it will look different, the screen will be darker and the icons bigger,but this is normal for safe mode.
Click Start/Control Panel/User Accounts When the User Accounts screen opens, click on the userid for which you forgotthe password. Select the option to REMOVE PASSWORD.
there are two methods you can try.
If you have the administrator account password for the local computer and the best way to uninstall K9 web filter from the local computer is to re-install it! Re-install k9 web protection will simply get you a new license code and a new password you can enter without the need of old password.
1.Open K9 web protection website
2.Click "get K9 NOW" tab on the top-left
3.Fill out the information and your email.
4.Download the K9 Web protection software from the link included in the email and keep a copy of the license.
5.Grab a version of the K9 web protection installed on your computer, a Google search should do the job.
6.Open "Task Manager" by press (Ctrl+Alt+Delete) and end the process K9filter found in the "Process" tab.
7.Now, you can safely delete the K9 web protection program files. Open computer explorer and go to the folder where K9 is originally installed. It can be found mostly at C:\Program Files/Blue Coat k9 Web Protection.
8.Remove the contents of the folder but not the folder.
9.Run the K9 web protection setup/installer file which has the same version as the one you just delete
10.Provide the license and create your new password
11.Point the installation folder to the same folder you just empty the contents earlier on
12.Now you can have a re-installed K9 web protection with a password you know.
How do you uninstall K9 web protection now? Use the new password you just created
If something goes wrong, install the K9 web protection program downloaded from Step 4.
Reboot Windows into safe mode: restart your computer and hold "F8? key until you see the menu to choose "Safe Mode"
Login to windows and go to "Program Files" directory and delete the K9 folder manually (delete only the contents but leave the folder)
Click "Start"->"Run" and type "msconfig"
Check the tab "Services" and tab "Startup"
Un-check anything that is related to k9
If somehow this method is messed up, try to download K9 again to at least restore your previous installation.
If this still does not work, try to install Revo Uninstaller.
Here is a video tutorial
It sounds like the hard drive has been locked with a password. This is the most secure method to protect your data if the computer has been compromised or stolen. It is virtually impossible to unlock a hard drive password because the password itself is written on the hard drive and cannot be removed even if you install the hard drive on another computer. Since you cannot access the hard drive you cannot access the password. You need to get a new hard drive or one that doesn't have a password lock.
If it's a Windows account password, you can remove it by getting a software password remover - these can be downloaded from the Internet.
As soon as u start the Laptop, start hitting F8 Key Cont. it will take u Safe Mode, click on safe mode, may be cud find another user account, Go to Start - Control Panel - User Account - Select ur User Account and Remove the Password.
& if incase u dont have any other User Account, then u will have to contact ur Manufacturer or u will have to Restore ur computer to Factory Settings.
Your Support Tech.