How do unlock parent control on an preowned xbox, and we have no clue the lock code.

In order to disable the parental lock on your Xbox console you need to follow the instructions on this Xbox support site.

How to reset forgotten pass code for parental controls on Xbox 360


Basically, in order to prevent smart kids from finding a default reset code and disabling the parental controls without their parent's knowing, each Xbox console has an unique reset code that is calculated from the console's serial number.
So if you are unable to remember your secret question to reset the console yourself, you will have to contact the official Xbox support here:

https://support.xbox.com/contact-us

When you are talking with a support agent, you need to confirm, that you are an adult, and then give them the console serial number.
They will then walk you through the process of unlocking your console.

That entirely depends on what you have locking it. Are you referring to the parental controls? If so, you have to contact MS support and they will provide you with a code to reset the machine.

Reset the wii to its factory settings witch me ans formatting it or try putting in4321 or 1234:)

Resetting to factory defaults / resetting parental locks

Press the following key combination

Left Trigger, Right Trigger, X, Y, Left Bumper, Right Bumper, Up, Left Bumper, Left Bumper, X


This should give you a dialogue asking whether or not you want to reset your system to factory default settings.

Here is the procedure to
GA_googleFillSlot("TL-IMU-Article"); reset the parental lock code:

1. From the XBOX dashboard screen, go to settings and then parental control.
   
   
2. When prompted for the password, perform the following sequence using the XBOX controller: X, Y, Left Trigger, X.
   
   
3. Enter in a new password, or disable parental control entirely.
   

Thanks Roety

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

You need to have the DVD dongle that plugs into the front of the Xbox in order to play DVD's. If you do have that, any universal remote should work on it, I use a GE AllinOne universal with mine, I think the program code is 000 or 0000.

Or, if its the lock thats getting you down...

Here is the procedure to reset the parental lock code:

1. From the XBOX dashboard screen, go to settings and then parental control.
   
2. When prompted for the password, perform the following sequence using the XBOX controller: X, Y, Left Trigger, X.
   
3. Enter in a new password, or disable parental control entirely.

Hope this helps!

Step 1
Turn on your PS2 and choose the menu screen where you would normally enter the password. Instead of entering a password, go to the DVD setup menu. Go to "custom setup" and choose "parental controls".
Step 2
When you are asked for the code or password, press the select button on your controller and enter the number "7444". Now set the parental lock to "off".
Step 3
Press "reset" on the front of the game console to save your settings. When the system reboots, you should be able to view your previously censored games or DVDs. You will also have the opportunity to choose your own password, allowing you to turn the parental lock on and off, either manually or automatically by game or movie ratings.
I often recommend that the parents of older children should regularly reset the password in order to prevent "hacking". Also, try to choose a password that could not be guessed easily. Often, a combination of both letters and numbers works best, as the laws of statistics dictate that more choices equal more failed attempts at cracking the code. Unless your child is exceptionally persistent or lucky, boredom will win out before they guess the correct code.

The parent control lock out code is 1234, you need to press yes then enter the code using the remote type in 1234 then press play button again and it unlocks the parent controls!

Here is the procedure to reset the parental lock code:

1. From the XBOX dashboard screen, go to settings and then parental control.
   
   
2. When prompted for the password, perform the following sequence using the XBOX controller: X, Y, Left Trigger, X.
   
   
3. Enter in a new password, or disable parental control entirely.
   

fixya!

Called Zenith.  They said: turn on the DVD player.  Hit "set-up". Scroll down to the "lock" icon.  Scroll over to "Rating". Scroll over to unlock.  Enter 0000.  Click on Ok.  Enter 0000 again, click Ok again.  Menu should read unlock.  Voila!