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How to Fix Computer Monitor Display Problems?

fix computer monitor display problem
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Are you having any display issues on your computer monitor? No matter if it is a CRT monitor, LCD or LED.Follow these instructions on How to fix monitor display?

Problem 1: There is no display on the monitor

Solution: This might sound silly. Make sure the computer and monitor are plugged into a power source and it is switched on. If there is no indication of power which can be confirmed by checking if the LED light is turned on or presence of sound coming from the computer fan, check if the power cords from the PC and monitor are properly and firmly connected. If you have multiple monitors for dual screen display, toggle between the chords to see if there is compatibility issue between the monitors. Still don’t see anything? Check to ensure that the video cable is connected to video output on your PC and the input on your monitor. Gently wiggle the cord to see if the plugs are secure. If you still have trouble, try a spare (or borrowed) monitor on the computer. Connect the spare monitor to see if the computer is capable of displaying video. If the second monitor works, your original monitor may be faulty. On the flip side, if it doesn’t work, the PC may be the cause of your problem.

Problem 2: Video light is too dark or bright

Solution: Some monitors feature Brightness or Contrast buttons that could be easily (mis)adjusted while moving or cleaning the monitor. Fortunately, most monitors feature a Default Settings or Factory Reset function you can use to restore the display settings, but many monitors feature an OSD (onscreen display) that will let you adjust the visual properties through a menu system with sliders for each adjustable option. If you’ve cranked the Brightness and Contrast controls and the screen still seems dark, you may need to take the monitor in for repairs. LCD backlights can sometimes fade or malfunction, which would results in the dim display. (Get an estimate; it may be smarter to simply replace the display, depending on the cost of the repair.)

Problem 3: Images on the screen does not match the screen size

Solution: It’s sometimes possible to choose a resolution that’s not compatible with your monitor. For instance, if you select the 1600 x 1200 resolution and the monitor can only handle a resolution of 1280 x 1024, the display may only show part of your Desktop—requiring you to move your mouse to view other portions. Check your monitor’s documentation to see the maximum resolution you can use. To change resolution in Windows 7 and Windows 8, right-click an open area of your Desktop and select Screen Resolution. From the drop-down list, select a resolution that matches the native resolution of your monitor. Click Accept; you’ll have 15 seconds to approve the change by clicking the Keep Changes button.

Problem 4: Flickering of monitor and video dropping out occasionally

Solution: Generally, flicker and dropouts are the result of a bad (or poorly connected) video cable running between your PC and monitor. Try unplugging and firmly reattaching the cable to the video input and outputs. Flicker can also result from a change to the monitor’s refresh rate, which is the number of times per second the monitor redraws the screen. (The accidental change most often occurs when you update video drivers.) To reduce flicker on your monitor, try to increase the Refresh Rate in Windows. In Win7 and Win8, right-click an open area of your Desktop, select Screen Resolution, and click Advanced Settings. Next, select the Monitor tab and select a different rate from the Screen Refresh Rate drop-down window. Click Apply and try out the new refresh rate

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About the author: Anup Raman A Tech Enthusiast|Blogger|Tech Trainer with 10+ yrs experience in the field of IT. My expertise are in Operating Systems, mainly Windows and Computer security which comes from my experience, working as Tech Support and Trainer for Microsoft, Symantec and McAfee. Loves blogging about Technical Troubleshooting, discussing latest Gadgets, Games and doing Reviews.

{ 8 comments… add one }
  • tasos Mar 15, 2017, 11:22 am

    in dark scenes is like something is behind (more like previous brighter scenes)
    can you help me ?

    • Anup Raman Mar 15, 2017, 1:45 pm

      Is that a LCD/LED monitor or CRT monitor? In CRT monitors, this can happen from picture tube problems. Also check the refresh rate. It should be minimum 60Hz on older screens, but with the latest screens it is much more. Check the instructions manual for more details. Also check if you have the option to load default settings for monitor. If yes, load default settings and check if that fix the problem.

  • mansi tripathi Mar 10, 2017, 5:46 am

    my monitor has a problem of 3 lines in a display how to remove it

    • Anup Raman Mar 10, 2017, 5:54 am

      Hi Mansi,

      Here are the possible causes

      1) Cable is not connected properly at the ports – Make sure it is connected properly at both ends.
      2) Faulty cable – The cable which connects between monitor and seat. Try a new cable or connect a properly working cable from another computer and check if the problem is gone.
      3) Electrical interference from other power cable located near the monitor.
      4) If non of this worked, this must be a faulty monitor. You need to get it replaced.

      Hope this helps.

  • phil Nov 15, 2016, 1:29 pm

    my monitor works but has a blue square roughly 4 x 2 inches with symbols showing half sun . speaker with volume red/blue/green circles hammer and spanner an atlas and a man stood in an open door. this obstructs my view

    • Anup Raman Nov 15, 2016, 4:42 pm

      I believe you may have the monitor menu turned on accidentally.
      Press the button which opens indicate menu on the monitor. It works like a turn on/off monitor.So press it once, the menu should be gone.

  • Marcus Oct 14, 2016, 10:16 am

    How do I correct the display? Pictures and videos are outlined in 3 colours. Many thanks.

    • Anup Raman Oct 14, 2016, 10:28 am

      Try troubleshooting in the following order

      1) Check for loosely connected wires and contacts between monitor and PC. Connect it properly.
      2) This may be a problem with video card. Check for problems in Video card.First check if the device drivers are installed properly for the video card and if it is an updated one. It also helps to uninstall and reinstall video card drivers.
      If that doesnt work, check if you have 2 video cards – an external and internal video card. Maybe one of the video card is not working properly.If you have 2 video cards, disable one at a time and check if that gets the problem fixed.
      If the video card is corrupted, you may have to buy a new one.
      3) Try connecting your monitor to another computer or connect another monitor to your computer. This will help you find out if it is a monitor problem. Buy a new one.

      Hope this helps. Let me know the status.

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