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Windows 7: Locked out of Computer - Cannot boot from disk

05 May 2017   #1

Windows 7 x64
Locked out of Computer - Cannot boot from disk

Situation is that a company in our office suite replaced all of their computers. Gave me a Dell Optiplex 780 desktop with Windows 7. Could not do anything without first being plugged into their domain. While plugged in, I tried to make a new User Account but could not, though I was given the Administrator Password. So I did something massively stupid and deleted the domain.

I got the warning 'do not delete the domain unless you have the administrator password' which I thought that I had.

After restart, I am totally locked out of the computer. Two users come up (not the administrator user I have), and the password doesn't work on either. I have rebooted in safe mode 20 times trying to do command prompts, boot from a USB flash drive, etc.

I cannot even change the boot sequence--it is locked (grayed out). Everything is locked unless I can enter a password for one of the Users--and nobody knows who they are or their passwords. I do not even know which version of Windows 7 this is, but the computer was on a network.

I do not have a Windows 7 operating disk because my home computer did not come with one--Acer laptop and I did not make a recovery disk. I have read about all kinds of fixes online and have seen links for downloading password evader programs. I am wary of opening and running any of these on my laptop to burn to a flash drive, that may not work. I don't want to screw up my good computer with malware. I can buy a refurbished computer exactly like this online for $100, so it isn't worth putting any money into it.

Is there anything at all I can do to use this computer? I don't really want to buy a Windows 7 disk if I am not going to be able to boot from it. Any ideas?

My System SpecsSystem Spec
05 May 2017   #2

Windows 7 HP 64

Welcome to the forum.
Can you enter into BIOS configuration or it is protected by password?
If you can, OEM computers has a BIOS option to do a Factory Recover that will format your C: drive (you'll loose all data on it) and then reinstall Win 7 from an image stored on a recover partition. You will end with a computer as it came from Dell.
My System SpecsSystem Spec
05 May 2017   #3

Windows 7 Home Premium 64 bit sp1

Is it possible to get assistance from the company to fix your problem. They gave you the computer so I assume you still work there & the IT section should be able to help you.
My System SpecsSystem Spec

06 May 2017   #4

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

My System SpecsSystem Spec

 Locked out of Computer - Cannot boot from disk

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