Unplug the monitor cable then plug it back ensuring that it is properly connected and in the correct place. Check for cable damage, including fraying, bends, and nicks.

Check video source and monitor. Reset your system BIOS to default. 1] Check cable connections As explained above improper cable connections is one of the reasons for the No Signal issue on a Monitor.

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.