hmm.. well, what exactly are you locked out of? just your user profile on windows? because you could just hit cancel when you login to windows and you would still have access to the files on your computer that you would normally be able to access and you could just make a new profile; you just might lose some settings that are individual to your profile, but it shouldn't be a big deal unless it's some amazing extensive thing... the files and the settings ARE on your computer no matter what user you are using...
but i dunno, that seems too obvious, i think i'm actually confused on what you're asking... if you hit cancel, will it just not let you login at all? i'm guessing that's the case. hmm. well, the obvious is to reinstall windows. uhh... yeah. we might be able to help a bit more if i have a few more details. what version of windows you using?
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