Solved! What is usb flash /how can it remove forgotten passwords

Solution
USB flash is a Flash memory disk drive that is typically connected to a computer via USB port and is typically very small, about the size of your thumb (commonly called thumb drives because of that).

reference: USB Flash Drives

As far as how it can recover your password. Well in your case it cannot. Acer provides a special feature where if you set a password to log into your computer, you can make a backup flashdrive that is specially formatted that allows you to log into your windows account by connecting this specially formatted flash drive to your computer instead of typing the password in. However, if you didn't create one, you don't have this feature available to you.

Alternatively, you can try 3rd party password recovery...

AntiZig

Distinguished
USB flash is a Flash memory disk drive that is typically connected to a computer via USB port and is typically very small, about the size of your thumb (commonly called thumb drives because of that).

reference: USB Flash Drives

As far as how it can recover your password. Well in your case it cannot. Acer provides a special feature where if you set a password to log into your computer, you can make a backup flashdrive that is specially formatted that allows you to log into your windows account by connecting this specially formatted flash drive to your computer instead of typing the password in. However, if you didn't create one, you don't have this feature available to you.

Alternatively, you can try 3rd party password recovery tools, that can be installed on a flash drive or bootable CD, but I can't recommend any.
 
Solution