I have a laptop from work model Latitude 5320 plugged directly into the monitor, was working fine until two days ago. The USB-C was charging the laptop and my monitor had no display issues. I have only been using the USB-C cable for the laptop no HDMI or Display ports. However this morning when I work up for work, I got the message on my monitor "No USB type C signal from your device". However the laptop is still charging fine from the USB-C cable, mouse and keyboard still responding fine on the laptop screen. Any help would be appreciated on how to resolve this.