Bios password doesn't work

[GhostyRL 2925]

I just put in a bios password for my dell latitude 7280 and I double checked I wrote the right words and wrote it on a piece of paper so I know what it is if I eventually forget, as soon as I did this my laptop restarted when I exited bios as usual, did the bios password screen thing to access the system I put the code in and it doesn't work, I try every combination of the password it doesn't work how do I get back into my system without contacting dell support cause they require 'proof of ownership' and apparently an email saying I bought it isn't enough ownership evidence

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