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Monitor problem Hi, my wife and I had downed powerlines after a major storm, and the lights started flickering inside the house. After the problem was fixed I noticed my monitor had a message floating around the screen saying no video hardware available. Can you please help us?

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Dear Booker3772,

From what you have written I assume you do not have a UPS system protecting the PC.

Unfortunately this mean that hardware has been damaged as electricity spikes have caused electrical stress to the components.

It would be helpfull to me if you where giving me a little bit more information but I will try to help. There are a few possibilities though that can narrow down the problem.

1. When you power up the system nothing happens - No noise no fans nothing. - Solution: The complete PSU or the fuse within is fried. (Change PSU and fire up again)

This is the most likely cause but these are also very possible.

2. When you power up the system the system fans, lights, hard disks make noise but you see nothing in the monitor except the sign. (The monitor's voltage regulation pcb is fried due to the storm) Try with a spare monitor if possible and if possible try the monitor to another PC

3. When you power up the system the system fans, lights, hard disks make noise but you see nothing in the monitor except the sign. If the monitor works fine, the PSU and the components seem to run fine most likely the components within the PC have been damaged. Not to the extend that a total failure is present but enough to create a mess. Some of the components will still probably be in good condition though. The only way to test them is by interchange one component with another.

In any case if the PC is still under warranty please go to a repair service centre and simply say that it stopped working. Do not mention storms, its your liability normally to protect the PC.

Regards
EngineerGR

Posted on Apr 10, 2008

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Posted on Jan 02, 2017

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1 Answer

Monitor flickring


  1. Flickering screen display

    Flickering on the screen can be caused by defective hardware in the computer or by improperly installed software, but it can also be caused by interference from external devices. The following examples describe situations in which your screen could start flickering:
    • Screen starts flickering because of interference caused by devices which generate magnetic fields, for instance:
      • a TV set
      • a laser printer
      • another monitor
      • fluorescent lights
      • hidden power lines
    • Apart from interference, an incorrect setting in your system CMOS setup can also cause flickering. On some systems it is possible to distinguish between interlaced and non-interlaced monitors. The setup of your system should always be colour non-interlaced.
    • Proximity to the monitor of fans, air-conditioning units or other devices with rotating motors.
    • The number of devices using power from the same electrical line. Are you overloading the plug?
    • Monitor placed on an unstable surface.
    • Improper video drivers, this is a software problem, see section B
    • An improperly configured or a defective video card.


  2. Reinstalling the video drivers

    1. Start the computer.
    2. Click Start, select Settings, and click Control Panel.
    3. Double-click the System icon.
    4. Select the Device Manager tab in the System Properties window.
    5. Make sure that View devices by type is selected and locate Display adapters and Monitor in the list.
    6. Click the plus sign (+) in front of both items to get a list of installed devices.
    7. You need to remove every device by highlighting it and clicking the Remove button and OK when the warning message appears.
    8. After doing so for both items, they should disappear from the list.
    9. Close the Device Manager by clicking OK, and you will return to the Control Panel.
    10. Double-click the Add New Hardware icon.
    11. Click Next, select Yes when it asks "Do you want Windows to search for your new hardware?", and click Next twice to start searching for new hardware.
    12. This will take a few minutes and, after it is finished, you will have to restart the computer. Windows 95 or higher will automatically set up the correct monitor and video drivers.
    13. If the screen is still flickering, click Start, select Settings, and click Control Panel.
    14. Double-click the Display icon and select the Refresh tab.
    15. Change the Monitor Refresh Rates until the flickering disappears.
    16. If the flickering remains, go to step C.


  3. Troubleshooting

    1. If it is possible, connect a different monitor to the computer. If the flickering disappears, it is a fair indication that the monitor is defective, otherwise go to the next step.
    2. Set up the computer and the monitor on a different place in your house. If the flickering disappears now, it is most likely an interference caused by something in the original location. Check for devices which can cause interference.
    3. If the flickering persists, check the setup of your system. If available in the setup, make sure that the option Monitor Type is configured as Colour Non-Interlaced.

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