A monitor might have been working all fine and suddenly stop displaying when you try to run your PC on again. It could be a power or a display connectivity issue.
Monitors need direct power from a plug to operate. If a monitor is not displaying anything. Seems to be blank or not even turned on, we should check for power supply first. Most monitors have lights built inside their frame. if you see a blue, green, orange or red light on the side or around the monitor, it shows power is connected.
If you don’t see lights being on, we must check the power cable first. Make sure the power cable is completely plugged into the socket. If you have an other cable, try swapping them and see if it makes any different. Try to wake up the computer by tabbing on the keyboard, Computers can go into sleep mode if they are left unattended for a while. Restarting your computer might set everything back to normal and give your display back.
If you still have trouble and issues with the monitor. please contact a professional IT technician to avoid more damage or data lose.
