Windows 10: Windows PIN not accepted, can't enter Safe Mode

Lenovo Ideapad S145 w Windows 10. 3 month old machine for my son to use for school. He set up a PIN and everything was working great until this week when his "5" button started to work only intermittently. His PIN included a 5 so I changed his PIN to something else, which worked great for 1 day. Today that new PIN is not accepted. Neither is the old PIN. I can't get into Safe Mode, BIOS, or anything else. F8 does nothing, Esc does nothing, F12 gives me Boot Master...The only thing available is the Boot Master and that is not making a difference. There is no option on the login screen for using a password to sign in, and there is nothing that says Forgot My PIN. When we try to use either PIN old or new now I get a message that says we have tried an incorrect PIN too many times and i have to type A1B2C3 to get a different login screen, which is useless. Ideas?

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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??

 

Safe Mode won't accept correct password

I'm trying to run a third party software (AVG Internet Security) cleanup file that recommends Safe Mode. Yet, when I get to the Safe Mode lock screen, it won't accept my password (note that I am entering the password, not the PIN - it's the same password that gets me into my Microsoft account). Any suggestions what I should try? I'm hesitant to run the cleanup file in full Windows since it's not recommended.

 

Password not accepted in Safe mode

Hi,

Thank you for posting your query on Microsoft Community forum.

Have you tried all the above steps suggested by Sangeeta Sarkar on September 13, 2015.

I would suggest you to provide some information to help you better.

• Are you trying to login the Microsoft account or the Local account in safe mode?
• Did you try with only safe mode or safe mode with networking?
• What is the critical error you are getting?

If you are using Windows 10. To go to safe mode you have to follow the below steps.

If you are able to go to login screen in normal mode try the below steps to go to safe mode with networking.

• 
  At the login screen click on the power symbol.
  
• 
  Hold SHIFT + Click Restart.
  
• 
  After restarting your system, select the Troubleshoot option.
  
• 
  Select advanced options under
  Troubleshoot screen.
  
• 
  Click on Startup Settings.
  
• 
  Click Restart and follow the onscreen steps to go to
  Safe Mode with networking and check if you are able to login.
  

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Please get back with more information, we will be glad to help you further.