initial, check if the monitor plugged in to a power channel and is connected to the PC securely. A few monitors will not function although the connection is loose. If the monitor is connected properly, ensure that the power button is on. If the power light is not glowing, the outlet may not be supplying power to the monitor or the monitor may have a dead power supply.

When you start your computer, if power light is on and nothing appears on screen, it is possible you contain a bad video card. Check the monitor on another computer to check the display works with another video card. If the display comes, try starting up your computer in safe mode by holding down the F8 key as the computer boots up. This should solve any screen resolution or color setting variance that may stop your monitor from displaying an image.

If the nothing come up when you start up in safe mode, you must open your computer and check to ensure your video card is seeded accurately in the motherboard. If the video card is correctly connected and the display still does not work, you will possibly have to change the video card in your computer. Check your computer's manual to observe if your computer uses a PCI or AGP video card before purchasing a new one.

If the monitor did not work even when you connected it up to another computer, the monitor has possibly gone badly. Check the cable to ensure it is not broken or frayed anywhere. After that ensure the pins on the connector are not broken or bent either, as even one bad pin can cause the video connection to fail. If you have a CRT monitor, do not attempt to open the monitor, as it can store an electric charge powerful enough to electrocute you although you contain a flat-screen display, do not try to repair it yourself, as it does not contain any user-serviceable parts. Instead, take the monitor in to your local computer repair shop and have them repair or replace it for you.