Monitor Troubleshooting

The monitor screen is black

Check to see if the computer turned on.

Is the computer turned on? There is a light on the CPU. If the computer is on, it will be lit.

Check to see if the monitor getting power.

If no lights appear on the front of the monitor at all, it is not getting any power from the power source. Check to see if ALL plugs are secure.
Power cord from the computer to the power strip.
Power strip to the wall socket.

Check to see if the Power Strip turned on.

There is a light on the strip. If the strip is on, the indictor light will be on.

Check to see if the monitor getting a signal from the computer.

There is a light on the monitor. If the monitor is on, it will be lit. If it is turned on, check the contrast and brightness buttons to see if they have been tampered with.
A green light on the front of the monitor would indicate that it is getting a signal from the computer.
An orange light would indicate there is not signal from the computer. Make sure the computer is on and you see lights on the front of it. Check the cable that runs from the monitor to the computer to see if it has worked loose.

Check to see if the brightness has been turned entirely down.

Make sure you check the brightness and contrast buttons or settings on the monitor.

Check to see if the computer in Power Save or Sleep mode.

Move the mouse or press any key on the keyboard to see if the computer will "wake-up."

Check to see if all peripherals plugged in.

Verify that all cables and cords leading in to and out of your computer to insure they are all in tight and not disconnected.

Secure the following to the computer:

Check to see if the monitor goes black just as Windows is loaded.

This could indicate a problem with the video card driver or settings in Windows. Since you can't see to get to the settings, this is difficult to fix without a visit from technical support.

The screen is not synchronized

Check to make sure the signal cable is firmly connected in the socket.
Check that the output level matches the input level of your computer.
Make sure the signal timing of the computer system is within the specification of the monitor.

The screen is too bright or too dark

Check if the Brightness or contrast control is at the appropriate position, not at the maximum or minimum.
Check if the specified voltage is applied
Check if the signal timing of the computer system is within the specification of the monitor.
Especially, check the horizontal frequency.

The screen is shaking

Move all objects that emit a magnetic field, such as a motor or transformer, away from the monitor.
Check if the specified voltage is applied.
Check if the signal timing of the computer system is within the specification of the monitor.