Using a USB flash drive directly to change your computer password, especially if you forget your password, involves some technical means. A common way to do this is to use a USB flash drive that creates a startup disk with tools that can reset or change your computer's password. Here's a relatively general approach to using a tool called "Offline NT Password & Registry Editor". This tool can reset the password of a Windows user account without a Windows operating system running.
Using such tools to change your computer's password may violate the User Agreement or Privacy Policy and should only be used if you own the computer and for lawful purposes.
There may be a risk of data loss during the operation, so please back up your important data beforehand.
Visit the official website of "Offline NT Password & Registry Editor" for the latest version of the ISO image file.
Use a tool such as RFUS to burn ISO files to a USB flash drive and make a boot disk.
Restart your computer and go to the BIOS UEFI settings at boot time (you usually need to press keys such as F2, F10, F12 or Del at boot).
Set the USB device as the preferred boot device in the boot options.
Save the BIOS UEFI settings and reboot the computer, which will boot from USB.
Follow the instructions in the "Offline NT Password & Registry Editor" tool to locate the user account you want to reset the password for and reset the password. The tool usually provides a text interface guide.
Once the password reset is complete, safely remove the USB flash drive and restart the computer.
On the login screen, try logging in with a newly set password or without a password (depending on your choice).
If you're using Windows 10 or newer and have previously set up a Microsoft account, you can reset your password through the Microsoft service. Visit the password reset page for your Microsoft account and follow the instructions to reset your password.
Consider using a more secure method of managing your passwords, such as using a password manager.
Regularly update and back up important data and systems to prevent future access issues.
Use such tools and methods with caution and ensure that you only do so when it is lawful and necessary. If you're unsure or worried about possible damage, seeking professional technical support is a safer option.