There are ways to recover the admin password. Use one of these to recover the admin password and remove and re-add to the domain.
Fix Broken trust relationship without local admin account password

Hi,
Is it possible to fix a broken trust relationship between a PC and a domain if the local administrator password is also lost on the PC? The user can only log in using his domain user account after disconnecting the network.
Thanks.
3 answers
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James Farrow-Couldrey 0 Reputation points
2023-06-01T12:45:37.99+00:00 Hi There,
the easiest way to fix this is to remove and re-add the machine to the domain.
If the user that is able to log in off the domain network is an admin, you can reset the local admin password this way, or simply create a new local admin.
if not, you would need to either have remote access software with some admin rights to run a cmd prompt to run the netuser cmd to reset the password.
failing this, you could always back up the required data and re image the laptop and start again.
Kind Regards,
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James Farrow-Couldrey 0 Reputation points
2023-06-01T12:48:03.6233333+00:00 failing that, if you have access to a cd drive - there is a win10 administrative disk that allows you to go in and reset/create accounts on the system.