The monitor appears blank when it is not connected to the monitor cable or if the monitor is defective. Perform the following steps to solve this problem.

1.Verify that the monitor is connected to a power source and is receiving power. In recent times, monitors have a small light on the front indicating that the power is on.

2.If the screen of the monitor appears white or gray(instead of black) and if a buzzing or high-pitched whistle is coming from the monitor, the monitor is probably not connected to the PC’s video card and ensure the connection is proper. Also check the connection at the rear of the monitor. The monitor uses a two-end video cable. Check the pins in the cable connectors for bent or broken pins before reconnecting them.

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3.Check that the brightness and contrast controls have not been tuned all the way up, which results in a dark screen. If these two controls are all right, check other controls because some combinations of settings will also darken the display. Use the monitor’s manual to see whether the solution to this problem is given or not. Besides this, set the monitor’s adjusting controls, such as brightness or contrast from the monitor’s menu.

4.Reboot the PC. Listen for beep codes and watch for error messages, if any, from the power on self test (POST). If a single beep is sounded and the PC appears to be continuing with the boot, then it means that the problem is in the monitor .Otherwise the problem may be that the boot is hanging up before the video BIOS and the device drivers are loaded.

5.Repalce the monitor with a new monitor. If the display appears, then it means that the previous monitor is faulty.

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