System error 8646 (CMD)?

Co
1

After a long time, I wanted to use my laptop again and have forgotten my password and have made me smart about Youtube that you can make by changing the "easier operation" for CMD and has system rights and can change the password! So far everything went well and now he tells me that I have a right, although I'm told that my authority is "system". How do I get on there?

ki

Simply switch to Linux