Hi, my dads ex girlfreind changed the username on my computer, i still know the password but i can only log in under a user account. to make matters worse someone broke into my shop and tried to open the cd player with a screwdriver or somthing and i cant use it for a recovery disk. i cant change my self to an administrator because the account that was changed was the administrator account. i dont know a whole lot about computers so any help would be nice, thanks.

1. Your Dad's computer must have remote login enabled for you to get into it's file system. Generally, you must also have an administrator-level account (user name and password) on that computer.

2. If your Dad's computer is set up as a webserver, and you want to change the website remotely, then it would have to have a link for a site administrator login. This should be a secure (https) page.

Those things have to be set up at the computer by someone with administrator level access. If nobody knows the password for an administrator level account on that computer, there probably is not much that can be done other than to go to the computer and copy or e-mail whatever files are accessible. Some people sell "password unlocking" software, but I cannot vouch for its effectiveness, nor its security - if it contains a Trojan Horse it would make the computer open to whatever hacker installed the Trojan Horse.

On the other hand, if your Dad had a webpage set up on a web hosting service, you do not need access to your Dad's computer to get to it. If you don't have the administrator username or password for the page, you may be able to get the hosting service to provide you with access once you show your legal authority to do so. This also holds for e-mail accounts.

If you have forgotten your password, if you have another user account with administrative privileges you can log into that account and change your original user account's password from the User Accounts applet in Control Panel. ... At the Welcome Screen, do Ctrl-Alt-Del twice to get the classic Windows logon box.

Follow the steps:
Requirements:
1 ) Windows Vista or 7 DVD

1. Insert the Windows Vista DVD into the DVD drive and then restart the computer.
2. Change Boot Options 1st Priority to Optical Drive.
3. When system booting up, if the message "Press any key to boot from cd" appears, immediately press Enter.
4. On Language Settings, Time and Currency and Keyboard Layout screen, just choose the correct settings then click Next.
5. On Install Now screen, click Repair. Note: Click No just in case you get the message: Windows found problems with your computer's startup options.
6. On the System Recovery Options screen, under Operating System, click Windows Vista then click Next. Then select Command Prompt.
7. At the command prompt windows, type the following command then press Enter after typing each command:
c:
cd windows\system32
echo ~takeown /f %1 /r /d y > TakeControlOf.cmd
echo ~icacls %1 /grant administrators:F /t
ren Magnify.exe Magnify.old
ren cmd.exe Magnify.exe
8. Restart the computer.
9. On the Welcome Screen, click the Ease button.
10. Check Make items on the screen larger then click OK.
11. At the prompt, type the command then press Enter.
net user Administrator /active:yes
exit
12. Restart the computer.

13. At the welcome screen, logon using the local administrator account.
14. Access Control Panel then click User Accounts. Select the username of the account you can't login to then remove the password.
15. Log off on the current local administrator account your are logon to.
16. Check if you can logon to your user account now.
17. Open c:\windows\system32.
18. Right click on Magnify.exe, select Properties -> Security -> Advanced -> Owner -> Edit -> Administrators then click OK.
19. Select Edit -> Administrators -> Full Control then click Apply then OK.
20. Rename Magnify.old to Magnify.exe
21. Open command prompt then type the command then press Enter.
net user Administrator /active: no
To create a new user :
Net user username/add
Windows XP/2003, Vista and Windows 7.
To add a new user account to the local computer from command line:

net user username password /ADD

Example: To add a new user account with the loginid John and with password fadf24as

net user John fadf24as /ADD

To add a new user account to the domain:

>net user username password /ADD /DOMAIN

Note that we do not need to specify the domain name here.
Example:

net user John fadf24as /ADD /DOMAIN

Rename a user account from windows command line
We can use below wmic command to rename a user account from command line.

wmic useraccount where "name='username' " rename new_username

Ex: To rename the user account techblogger as win7techblogger

wmic useraccount where "name='techblogger' " rename win7techblogger

Net use command does not have any switches to rename a user account.
Few more Advanced uses of net user command.
To specify user full name while creating the user account

net user username userpasswd /ADD /FULLNAME:"User_Fullname"

To specify that the user is allowed to change the password

net user username userpasswd /ADD /PASSWORDCHG:Yes

To restrict user not to change the password:

net user username userpasswd /ADD /PASSWORDCHG:NO

To specify when the account expires we can use /EXPIRES switch.
To specify if the user must have a password set we can use /PASSWORDREQ switch.
How to create a new administrator account from command line?
An administrator account can't be created directly from command line. We first need to create a user account and then add the user to the administrators group.
Errors:
If you don't have privileges to add new user account to the system, you would get an error like below.C:\>net user John /add
System error 5 has occurred.
Access is denied.
C: \>

if cant able underatand send me your mail id..

Hi John,

What operating system does your computer have, assuming you are having trouble logging into a version of Windows (XP, Vista, Win7, other)? The following will be applicable to most but may be slightly different between versions.

Have you tried logging in with the Administrator account?

Try logging in with the Username 'Administrator' and an empty password. If you are able to log in, go into the control panel under Users & Accounts and reset the password for your user account to nothing or set a new password.

If you are not able to log into the Administrator's account or another user who has administrative privileges you will need to try a Rainbow crack (very technical) or log into another account on your machine that has administrative security privileges.

If all else fails you can run the Master Restore CD or System Recovery tools that came with your computer.

Now which operating system are you running ?

Forgetting your Windows XP login details might at first seem like a disaster. Don't panic though; your login password and username are easily recovered by changing the login details to that of the administrator.

Begin with your computer turned off, and then turn it on. You will need to log in to your computer manually and this can only be done in the load-up screens. Wait until your computer reaches the Windows login screen. The screen usually displays a "Welcome" message. Press and hold the "Ctrl", "Alt" and "Delete" keys two times at the Windows login screen. Your computer will automatically reveal a Classic Login box. Type "Administrator" (without quote marks) into the "Username" field and leave the "Password" field blank. Windows automatically creates an Administrator account when your computer is first booted up; in this account you can alter or change any user's login details. Navigate through the "Start" menu and click on the "Control Panel." In the Control Panel explorer, double-click on the "User Accounts" icon to open a new window. Select "Change an Account" in the User Accounts window and select the username you want to alter. From here you can edit the user's name and password, but you can also alter the user's picture, account type and .NET password. Restart your computer to login with your new username and password.
b>

for which operating system ????

Windows XP users
Change password

1. Open Control Panel
2. Double-click the Users Accounts icon
3. Select the account you wish to change.
4. Select the option "Change my name" to change your username or "Create a password" or "Change my password" to change your password.

Note: Windows XP Home users can only change the Administrator password through Safe Mode

Windows Vista and 7 users
Change password

1. Open Control Panel
2. Click Add or remove user accounts.
3. Click the account you wish to change.
4. Click Change the password

Change username

1. Open Control Panel
2. Click Add or remove user accounts.
3. Click the account you wish to change.
4. Click Change the account name

Windows 2000 users
Change password

Microsoft Windows 2000 users can change their username by pressing CTRL + ALT + DEL while in Windows to open the Windows Security window. From this window click the "Change Password" button

Enter your old password and the new password you wish to use.
Change username

In order to change the username of an account on Windows XP you will need to have an account with Administrator rights. If you're logged in as Administrator or have an account with Administrator rights, follow the below steps.

1. Open Control Panel
2. Double-click the Users and Password icon
3. Make sure "Users must enter a user and password to use this computer" is checked.
4. Highlight the account you wish to change the username for and click the Properties button.
5. Within the Properties you'll be able to change the User name.

hope this helps

what operating system ? and what type and brand of computer desktop laptop ?

Often many users will leave the administrator account alone or have other accounts with administrator rights. If you're not logging into the computer as administrator or have other accounts follow the below steps to reset your other accounts password.

Reboot the computer into Safe Mode.

When logging into Safe Mode you should be prompted with an option to what account you wish to use. Select the Administrator account. If prompted for a password try pressing Enter on the keyboard for no password. If this does not work, try other passwords you may have used. If you're unable to log into the Administrator account skip to the next suggestion.

Once you've logged into the Administrator account open Control Panel and User Accounts.

In User Accounts select the account you wish to change the password for, click change password and then enter the new password or click remove the password to remove the password from the account.

hope this helps

Go to Control Panel,Click User account,Click the Username and click Change Password.

That's it.

yes if the password is unde bois you can clear the cmos hardwar if it is under windows you can use hierin to remove the password it is easy contact me with details and i will tell you how to deal with the passswrod issue you have

try just leave blank the password and press enter.

username: administrator
password: _____+______

press "enter" in the keyboard.