A:Answer There could be several reasons for this. The most common culprits are the wrong input source selected on the monitor, loose cables, or needing a restart; first ensure the monitor is on the correct HDMI port (e.g., HDMI 1, HDMI 2), check cable security at both ends, then restart your computer and monitor, and finally, try a different cable or port to rule out hardware failure. Also if you are using an adapter that could be the problem as well. We suggest you post your question on the Acer community forum at community.acer.com. This is a very good peer-to-peer forum for questions and answers on Acer products.
