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My Computer Monitor goes OFF while System stays ON.

Discussion in 'Motherboards & Memory' started by michael, Feb 23, 2014.

  1. michael

    michael

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    Hi Guys,

    I have recently started experiencing very unique problem.
    After using computer for few hours suddenly the Monitor goes off, while system stays ON, then I check my Motherboard Asus LED code it shows "AO" which it normally shows when all is OK.

    So I restart my PC and then the Monitor starts after system reboots.

    I really don't know what is the problem here?

    System Name:To be ALL IN ONE MACHINE. but not yet
    Processor:i7 3770k
    Motherboard:Asus P8Z&&-V Deluxe
    Cooling:Thermalright Silver Arrow
    Memory:Gskill Ripjaws 1600Mhz 8GB *4 = 32GB
    Hard Disk(s):Samsung pro 840 256GB, Segate 3TB and 1TB
    Optical Drive:Transcend portable
    LCD/CRT Model:LG 23" Full HD LED
    Case:Antec LanBoy Air
    Power Supply:Cooler Master M2 Silent Pro 850 Watts
    Software:Windows 7 ulimate 64bit

    I am also using APC Back-UPS Pro 1500. so there is no chance of Power fluctuation.

    Please advise.
  2. Hugis

    Hugis

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    I see you have an LG monitor, i had a similar issue some time ago, i had to RMA the monitor.
    They changed a power board inside the monitor.......
    It can only be monitor or graphics really, first try the monitor on a different system then check the card if the monitor doesn't go off on a different system..
    michael says thanks.
  3. micropage7

    micropage7

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    what about resetting your monitor setting first
    and check button light on your monitor, is that normal (like red when on and yellow when standby)
    michael says thanks.
  4. FreedomEclipse

    FreedomEclipse ~Technological Technocrat~

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    I had a similar issue with a laptop, turned out to be the light tube inside the screen that was dying/dead.

    I dunno about desktop monitors but if its not the inverter (which is the power circuit) then its the light tube
    michael says thanks.
  5. de.das.dude

    de.das.dude Pro Indian Modder

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    does turning off the monitor mains and turning it back again work? if it does, probably the monitor is faulty.
    michael says thanks.
  6. DLGenesis

    DLGenesis

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    i had monitor that would kind of like turn it self off and on. the monitor was faulty. its not like it just turns itself off, just goes blank
    michael says thanks.
  7. michael

    michael

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    Ohh yes, Right. When this problems occurs, My LEd Monitor does not even show Red or Blue LEd light even after I press ON and Off button.

    I wish it is monitor problem.

    @dedasdude:- Yes I will follow what you said that will help me know the issue well.

    and however as Motherboard LEd keeps showing "AO" during monitor OFF phase so I think no problem with my motherboard.
  8. Derek12

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    Does the computer freeze ie caps lock led not responding, sound stopping, pinging from another pc not responding when the monitor shuts down?Try to unplug the monitor power cable and plug it again after it shutsdown
    Last edited: Feb 23, 2014
    michael says thanks.
  9. michael

    michael

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    Ohhhh Yes..

    I do Thanks a lot for all for replying...

    I am so happy that my Highly configured CPU has nothing to do with this Monitor shutdown as when it happened now I just tried to unplug the main power supply from my UPS and tried to plug it initially I could see no response on Monitor even Led on it was not blinking so I waited for 5 more minutes and tried again this time my Monitor Blue Led blinked and my Computer windows appeared with same screen which was there before Monitor shuts Off.

    I really Love this techpowerup.com forum all users here are damn helpful and knowledgable .
    :rockout::rockout::rockout::rockout::rockout::rockout::rockout::rockout::rockout::rockout::rockout:
  10. de.das.dude

    de.das.dude Pro Indian Modder

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    try running the monitor on direct power. UPSes dont really give identical power output. so a lot of things can often malfuncion.
  11. GayleShier New Member

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    but running the system on direct power can be more risky and can cause more trouble even
  12. FreedomEclipse

    FreedomEclipse ~Technological Technocrat~

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    I doubt many people can afford to purchase a UPS for everyday use. Ive never used a UPS since I started with computers back in 90s and have never had a problem. I can count the amount of powercuts/outages ive had since then on one hand and its really not much of an issue unless you do a lot of important work on your PC/Laptop or for some reason the electricity in your house is just 'dirty' so you use the UPS to smooth it out.

    theres no real need for a UPS for the average user.
    de.das.dude and RCoon say thanks.
  13. de.das.dude

    de.das.dude Pro Indian Modder

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    this ^ a good power supply is better than any ups. my power supply even saved from lightning strike on the house.

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