Windows 10: My laptop is not accepting my pin after restarting it. It keeps saying wrong password...

My laptop is not accepting my pin after restarting it. It keeps saying wrong password meanwhile I never change the pin it

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Stuck in diagnostic mode, PIN # not accepted, please help

I had no issues with my computer prior. I simply was following some online suggestions for ways to reduce lag in an online game we like to play. The suggestion was to turn diagnostic mode on, which I did. I shut my computer off and when I turned it back on and entered my PIN # it said it was incorrect, yet, it is indeed correct. This started a week worth of nonstop research on how to undo this mess. I can hold the shift key down while restarting my computer and I get a blue screen where I have several options. I have tried restarting my computer to previous version, does not work. I have gone to troubleshooting, advance, options and I get to the point that I can see a list of options like safe mode and etc. but cannot click on any options in the list, instead it says restart computer to get me to those options which when I restart takes me right back to the Windows login screen. I tried to pull up command prompt and it asks for my PIN # which it will not accept. I click on forgot password and it restarts PC and takes me right back to the windows login screen where my PIN is still not accepted. I try to get to safe mode, it asks for the user account and then the PIN # that again, it will not accept. I have turned the PC on and off 3 times to start the auto repair and it just takes me to the same screen as holding down the shift key when restarting. I don't know what else to do, I cannot get to safe mode because it requires a PIN # that it does not accept, I cannot get into command prompt because it requires a PIN # that again says is incorrect, I cannot get anywhere with any of the online options or directions I see that works for many people. WHAT DO I DO? Any help or suggestions??

 

Windows not accepting password

My computer is in safe mode and says my password is wrong, i've tried my pin and Microsoft password. won't accept either went to command prompt to type in message as suggested, ask for password to sign in there got message that password is incorrect there
too tryed everything I know and can't fix problem, please help

 

Laptop password is wrong and cannot sign into it.

1. Window saying wrong password. Also cannot get laptop to into safe mode when hitting the shift key and restart