And I want to become the admin for that particular group, but the only admin remaining can’t be contacted because that person deleted their account for some reason. What should I do?
Best reply by ♥little monkey♥:
tough luck :/
make a new group 
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What happens when the admin of a facebook group no longer has an account?
An idiot erased every sessions on my computer.Now there’s only one more and it’s not an admin.How can I create an admin session or gain admin privileges?
Best reply by Negrau:
Start > Control panel > User Accounts > Select user > Change my account type.
If you can’t do it like that try restarting your computer in safe mode because that is the only way I can acces my administrator O_o
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How can I create an admin session on my Windows XP if there are no admins?
I have a limited access account on my Mac, and I need to know how to create another admin account so I can enable installations, etc that I couldn’t do without the original admin password. It is necessary that I do not delete the original administrator account in the process, and if it is possible, I am able to use the new admin account to find the password for the original admin account. Please help!
Best reply by Kahless:
Assuming there is no “root” password, you have to insert the MacOs X DVD that came with the Mac. Restart holding down the “c” key, you then then access the accounts section and add a new admin account.
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How do I create another admin account on Mac OS X without original password and without deleting original admn?
My dad runs my computer [and is an admin] and my account is listed as an admin as well. How do I delete his account on my computer?
Best reply by Jason Y:
Open your ‘Finder’ and go to your ‘Applications’ section and click on ‘System Preferences.’ Under ‘System,’ click on ‘Accounts.’ If the lock on the bottom left corner is locked, click on it and enter your password so you can make changes. Click on the account that you want removed, and click on the ‘-’ button just above the lock. Hope this helped.
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How do I delete an admin on my Mac laptop when my account is an admin as well?