An account that's not mine is admin on my laptop

Hi TONKIN Flynn,

I'm Hendrix, here to help with your query on the Microsoft Q&A forums.

Apologies for any inconvenience you are experiencing. I am happy to help you today.

If you cannot log in with any admin account and need to restore admin privileges, try the steps below:

1 - Boot into Windows Recovery Environment

• Restart your PC.
• While it’s restarting, hold the Shift key and click Restart from the login screen or Start menu.
• This opens the Advanced Startup Options menu.

2 - Navigate to Command Prompt

• In the menu, go to: Troubleshoot → Advanced options → Command Prompt.
• Your PC will restart and ask you to choose an account to continue. Select your account and enter the password.

3 - Enable Built-in Administrator Account

• In the Command Prompt window, type:

    net user administrator /active:yes
  

• Press Enter. You should see the command completed successfully.

4 - Restart and Log In

• Close Command Prompt and restart your PC.
• On the login screen, you’ll now see an account named Administrator.
• Log in to this account (it has no password by default).

5 - Fix Your Account Permissions

Once logged in as Administrator:

• Open Settings → Accounts → Family & other users.
• Select your main account → Change account type → Administrator.
• Apply changes.

To assist others who might have similar questions and to help us improve our support system, we kindly encourage you to "Accept the answer" if it successfully addressed your concern. Accepting an answer lets other users know that this solution worked for you, and it also helps us track the effectiveness of our support efforts.

Warm regards,

Hendrix Vu | Microsoft Q&A Support Specialist

You can swap from one online account to another via Settings > Account but I just want to make sure of a few things first.

Do you see your account on the sign-in screen or do you need to use your Dad's account to sign-in?

If you do and you go to Settings > Accounts do you see your account listed anywhere?

To swap from one online account to another go to Settings > Accounts and if you see your Dad's account under Your info select Sign in with a local account instead.

If you have never used a local account the process will prompt to setup a new local account.

Follow the onscreen instructions and once complete sign out the online account.

Sign-in using the local account. Return to Settings > Accounts and under Your info it will show Sign in with an online account instead select this and use your school account.

After the process is complete sign out and you should see your school account on the sign-in screen instead of your Dad's account.

Select your account, sign-in and see if normal service is resumed.

Hello,

If your computer is issued by school and managed by school, you need to reach out to your school IT. No one here can bypass your school IT to give you any modification recommendation.