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probook 4740s

SO heres the deal i just erased my entire disk in order to format the computer. Then i tried to go to BIOS to change boot order  as Admin but i didnt have the password. So i logged in as guest (where everything was unlocked) and set my admin password... or so i tought.

 

Now i cant login as a guest anymore also my admin password dosent work anymore, but i have a new user available that can log in with password that i set in when i was logged in as guest but everything is grayed out.

 

I tried to put out battery but it dosent work if i write the wrong password 3 times all i can do is shut down the computer.. 

 

Now i ran out of ideas and also google isnt helping at all, so any advices would be greatly appreciated

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