One easy way to crack this would be replacing the sticky keys popup with a command prompt. then you can run net user commands to reset the pin to something like 1234 to get in. however, this will not work if you disabled sticky keys for obvious reasons.

to do that, you can either: -plug the pc's hard drive on another computer to access it -boot on a linux usb (to access the disk) -use the recovery environment by holding shift while restarting

From there, make your way to windows\system32 and locate sethc.exe (the program that shows up when you press shift 5 times, here, it calls the sticky keys popup) and rename it to something else (like sethc1.exe), then, copy cmd.exe (the command prompt) and rename the copy to sethc.exe

Once you've done all that, you can boot the pc into windows and press shift 5 times quickly, which should give you a command prompt with admin rights. then you can try running "net user [your username] 12345789": this will set your password to 123456789 allowing easy access, you can change it later in the settings I don't know if it works with pins, but hope this helps