(Liaison for Desktops, Alienware, Monitors)Quick link for Manuals and Drivers
I have successfully installed the driver that was downloaded and restarted the computer. However, it took 3 attempts because the sequence of steps you provided were not usable from the point "Have Disk" was indicated since it did not appear there. Also, the step "click the *.inf file" was not used. It appears to have extracted the correct file within the "Monitor" folder (M782p.inf) since it works.
Thanks for your assistance.