How to Change Inputs on a Monitor
This article is a walkthrough on how to change input modes on a monitor. The exact sequence of buttons to use will vary based on manufacturer. Consult your monitor manual for device specific instructions.
Note: The words input, source, and mode are used interchangeably,
1. Input button on the monitor that cycles through inputs with each press:
This method involves pressing the input button on the monitor once to bring up the next input per monitor specifications. There are a few locations to look for the buttons. They can be on the front or side panel and are usually located towards the bottom of the monitor.
2. It is also possible that there will be no Source, Input or Mode button in the monitor and it will have to be done by pressing the Menu or Options button and navigating through the menus. Because this varies so much per monitor we recommend checking the included documentation for instructions.
If there is only one connection to the monitor, the computer should automatically detect the input and change it to the correct setting upon startup. If there is more than one connection being made to the monitor, it will usually select the best quality connection available.
- See more at: http://www.microcentertech.com/tech_center/DB/read_article.php?faqid=./HowTos/HOW8003832B.htm#sthash.2pc2YjtF.dpuf
As j4m3s shared, your monitor make and model can be searched for "button" descriptions if you do not have your manual 😄
The good news about your keyboard lighting up, your motherboard appears to be working.