Why is my monitor saying Input Signal not found? If your monitor displays an “ Input Signal not found ” message, it implies that there are some issues with the connector cable.

Upon exploring the monitor menu, I found a menu called "Input Signal Voltage". It was set to 1.0V by default, the only other option was 0.7V.

If there is No Signal on monitor on a new PC, but the CPU is running, you need to take the following steps to resolve the issue.

The standard analog input for a PC monitor is the Video Graphics Array connection. As technology has developed, many PC monitors have been manufactured accommodate multiple input standards.