I bought a used computer and i cant access it without a password.how do i reset the password

If you have forgotten your password and do not have a password reset disk, there are a few options you can try to regain access to your computer. Here are some of the methods you can use:

1. Use the built-in administrator account: Windows has a hidden administrator account that can be used to reset your password. To access this account, restart your computer and press F8 before Windows starts. Select "Safe Mode with Command Prompt" and log in as the administrator. Then, open the command prompt and type "net user [username] *". Replace [username] with your account username and press Enter. Follow the prompts to create a new password.
2. Use a password reset tool: There are several password reset tools available online that can help you reset your password. One popular tool is called Ophcrack, which can be used to recover your password by cracking the password hash. You can download Ophcrack from its official website and create a bootable USB or CD to use on your computer.
3. Reinstall Windows: If you are unable to reset your password using the above methods, you can reinstall Windows. This will erase all data on your computer, so make sure to backup any important files before proceeding. To reinstall Windows, insert your Windows installation disc or USB and restart your computer. Follow the prompts to install Windows and create a new user account with a new password.

Note: These methods should only be used to reset a password on a computer that you own or have permission to access. Resetting someone else's password without their permission is *******.

Google windows password recovery software. You will want to download it and put it on a CD. Tun the software and reset the admin password.

Lost Windows password:

• Login as Administrator. Try with no password (load safe mode if you don't see Administrator). Press F8 during boot to access Safe Mode. XP only.
  
• Login as other user (if other user is available) and manage users. Must be an administrator.
  
• Reformat computer.
  
• Use 3rd party software to remove password. Like http://www.top-password.com/reset-windows-password.html
  
• Free software option would be Hirens Boot CD. This one is command prompt only. http://www.hirensbootcd.org/ Must follow instruction exactly.
  

reset to factory settings..or call the manufacturer

Here's how to use Windows Password Recovery Standard to reset windows without a password.
Step1: Get Windows Password Recovery Standard from: http://www.recoverlostpassword.com/products/windowspasswordrecovery.html.
Step2: Install and launch it to any accessible computer.
Step3: Use a blank and writable CD/DVD to burn Windows password reset disk with the tool.
Step4: Boot the locked computer from CD/DVD.
Step5: Start to perform Windows password hackwith the burned disk.
Step6: Reboot computer and login to the machine without password.

Here's how to use Windows Password Recovery Standard to reset Windows without a password.
Step1: Get Windows Password Recovery Standard from: http://www.recoverlostpassword.com/products/windowspasswordrecovery.html.
Step2: Install and launch it to any accessible computer.
Step3: Use a blank and writable CD/DVD to burn Windows XP password reset disk with the tool.
Step4: Boot the locked computer from CD/DVD.
Step5: Start to perform Acer password reset with the burned disk.
Step6: Reboot computer and login to the machine without password.
(Note: Before starting password reset on Windows process with Windows Password Recovery Standard, you need to find another accessible computer and an empty CD/DVD.)

You can reset laptop password with Smartkey Windows Password Recovery, just do as the following steps,

Step1: Download Smartkey Windows Password Recovery from http://www.recoverlostpassword.com/products/windowspasswordrecovery.html.
Step2: Install and launch it to any accessible computer.
Step3: Use a blank and writable CD/DVD/USB to burn Windows password reset disk with the tool.
Step4: Boot the locked computer from CD/DVD/USB.
Step5: Start to reset laptop admin password with the burned disk.
Step6: Reboot computer and login to the locked PC without password.

You may have to browse online for tips on "how to bypass administrator password on a PC"

Videos and articles containing useful and applicable tips abound.
Download, watch/read and learn and then implement.

Make sure, it is your personal and privately owned PC please.
Best of luck while at it

you can log on as an administrator (if it is available) with pressing two times of CTRL + ALT + DEL key. some times the default administrator name have no passwords. so, you can try to enter without a password. then you will create another user name as your own.

If you cant logon with the administrator, just u can go for password reset or recovery disk to break that.

you go to www.password-reset.com or www.lostpassword.com/windows.htm

thank you.