I need to know how to send the alt ctrl del keystrokes to unlock remote machine by script, I have a locked machine that I need to unlock my only way right now is to go to the PC and press ctrl alt del and put the password and press enter, I need this thing to be done automatically by script or something else, even if you have a file that I can run on the remote machine that i need to unlock it will be fine, I have a program that run on the remote machine that gives me the ability to run files on the remote machine.
I can't install all the Remote Admin VNC and PC Anywhere I need something that isn’t installed program.

Plz it's very urgent for me

Many Thanks