8.1 stopped asking for Pin. forgot password

I updated my os from 8 to 8.1 a few months back. I put a password and pin as sign in options, and have been using the pin ever since.
I started my pc today and noticed it was asking for the password not the pin. Since, I had not been using it, I forgot the password. There is no 'sign in options' for me to switch to the pin. I have tried almost every password that I might have put, but no luck. I'm sure I must have put some hint for the password, but it didn't show up even once.
There is an option to access my Microsoft account, but since I don't have any saved WiFi networks, that's not an option.
I have no idea what to do. I think it's a bug of some kind, and I don't think anyone has encountered this before. Please help me.

If you try and fail the PIN a few times it will revert to password only as a security measure. Perhaps someone was trying to get into your PC. If you google for "Windows password recovery tool" there are many programs available that claim this ability. I can't recommend one however, no experience.

mikeytg said:

If you try and fail the PIN a few times it will revert to password only as a security measure. Perhaps someone was trying to get into your PC. If you google for "Windows password recovery tool" there are many programs available that claim this ability. I can't recommend one however, no experience.

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Thank you.. Will try that..