There should be a lot of articles on this topic on the Internet. I recently installed win8 for fun. If I forget my computer password, how can I enter the system? Of course, there are a lot of jobs, what I want to talk about is to manually enter the win8 system. In fact, there is no additional technical content. The core component replaces the sticky-Start Program sethc.exewith cmd.exe. Under C: \ windows \ system32, There Is A sethc.exe (program corresponding to the sticky key) which can be implemented by pressing shift 5. Step 1: Start the command prompt as an administrator, cd C: \ windows \ system32, locate system32 on the C drive, and sethc.exeand cmd.exe are all here. 2. Continue to run copy cmd.exe sethc.exe on the command line (Change cmd.exeto sethc.exeand run sethc.exe to run cmd. exe ). Of course, you can copy sethc.exe for backup first. For security reasons, you can create a file named ". exe" to decompress the encrypted file, and set the file name to sethc.exe. Of course, this requires winrar support. Why don't I change it directly? I also need to use commands because dos has higher permissions than admin, and admin may fail. Although dos has higher permissions than admin, as expected, a message indicating Access Denied is displayed. Why? Directly Delete sethc.exe, rename, and other operations will find that in addition to administrator permissions, you also need the permissions provided by TrustedInstaller to change the file. OK, how can we get this permission? It's easy to change the owner of the exe file. The method is as follows: Right-click -- Property -- Security -- advanced, the owner is TrustedInstaller, click Change on the right, enter your username or Administrators, and click check name on the right to confirm. Don't forget to change the access permission of the user name or Administrators to full control. Then, run Step 2 to find that the command is successfully executed. The firewall is back, because System File Protection is working. Solution: Run> gpedit. msc> Computer Configuration-management template-system-windows File Protection to disabled. Open the service and stop the Cryptographic Services Service. OK. Don't forget to change it back later ~ 3. restart the computer and find that you want to input the password. Press the shift button under 5 continuously, and the window of cmd.exe is displayed, and it is administrator privilege. That is because we changed sethc.exeto pai.exeand run cmd.exe at sethc.exe. Enter the command: net user username 123456 to forcibly change the password to 123456. Enter 123456 to enter the system, and you will not be afraid to forget the password to enter the system, saving the trouble of using tools to crack the password. PS: swap is replaced with these programs. If you have TrustedInstaller permissions, refer to the above method to solve the problem. Of course, if it is someone else's computer, it is estimated that only tools or winpe can be used, and then change according to the above method, it should also be OK ~~~