Suggestions to reset windows 10 password

Hi,
I recently upgraded my Dell laptop from win 7 to win 10. I didn't realize it was going to mess with my log in credentials. For now, I'm completely locked out of my PC. I can't log on, it just tells me when I enter in the PIN and the Password that "Your device is offline, please enter old password." I do that and it rejects it. I can't get internet access because I live on a college campus and the way they have it set up is you have to be logged into your computer before you can access the network.
Does anyone know how to fix this bug?
I recently upgraded my Dell laptop from win 7 to win 10. I didn't realize it was going to mess with my log in credentials. For now, I'm completely locked out of my PC. I can't log on, it just tells me when I enter in the PIN and the Password that "Your device is offline, please enter old password." I do that and it rejects it. I can't get internet access because I live on a college campus and the way they have it set up is you have to be logged into your computer before you can access the network.
Does anyone know how to fix this bug?