Broken Cable – Cables can get frayed or the wire inside can break or split. Try different cables or see if those cables work on other monitors to make sure they are working.
Solution – Replace the broken cable.
Cable Length – Cables can only go a certain length. If you are trying to connect to a monitor over a long distance, it could cause the signal to be weak or fuzzy and even not display at all.
Solution – You can use signal boosters to increase the signal or use a shorter cable.
Out Of Date Drivers – Graphics card companies release drivers every few months for their graphics card so they can support new monitors.
Solution – Update your drivers via your device manager or your graphic cards brand website.
Insufficient Hardware – Not all graphic cards are the same. The larger and higher definition the monitor is, the more powerful graphics card you will need.
Solution – Check the stats on your graphics card and see if it is compatible with your monitor.
