Sometimes checking cables when the computer can be a quick and easy fix. Here are some things to check when things go wrong.

VGA Cable-  This provides an image from the computer to either a monitor or projector, when this isn't connected properly in the monitor or PC, it can cause a (No Signal) message. 

Image result for vga cables

Kettle Lead- This cable provides power to both computer and monitor, it is worth checking it is properly connected if either device has no power light etc.

Image result for kettle lead

Ethernet Cable- This cable carries the internet and network to the pc, if without you will need to check the connectivity.


Image result for ethernet