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my computer monitor will NOT wake up from sleep mode

Anonymous
2012-02-29T23:31:09+00:00

Help! Have a Dell inspiron with a Samsung monitor. Runs on Vista 64 bit. In the last 24 hours the monitor has suddenly stopped waking up from sleep mode.  I'm guessing Windows did an update that affected it somehow from other posts I've read.

 I have rebooted multiple times, unplugged/replugged everything, etc. Still no wakey!! I have no screen access so I can't do ANYTHING to check system, change things, etc. What to do?? I am not super computer savvy so any help appreciated!

Windows for home | Previous Windows versions | Performance and system failures

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  1. Anonymous
    2012-03-01T16:44:15+00:00

    Hi,

    Method 1:

    I would suggest you to refer the link and run the troubleshooter:

    Troubleshoot power problems

    http://windows.microsoft.com/en-US/windows-vista/Troubleshoot-power-problems

    Method 2:

    Refer to the link and check if it helps:

    Turn off a computer: frequently asked questions

    http://windows.microsoft.com/en-US/windows-vista/Turn-off-a-computer-frequently-asked-questions

    Method 3:

    I would suggest you to follow these steps and check if it works:

    a. Open Device Manager by clicking the Start button, clicking Control Panel, clicking System and Security, and then, under System, clicking Device Manager.‌

    If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

    b. In the list of hardware categories, find the device that you want to allow for waking your computer, and then double-click the device name.

    c. Click the Power Management tab and then click the “Allow this device to wake the computer” check box.

    d. Click OK.

    Let us know if it helps.

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  1. Anonymous
    2012-03-01T16:08:06+00:00

    If you are sure the computer had started then you can try another monitor from another computer or try your monitor on another computer.

    On a laptop there is a key combination to turn on additional monitor or switch between monitors that you can try:

    Press the "FN" and "F8" keys at the same time to switch the display to the external monitor. Press the keys together a second time to show your computer display on the external monitor and the laptop's LCD screen at the same time.

    Press the keys a third time to switch back to displaying images only on the Dell laptop's LCD screen.

    How to Switch to an External Monitor on a Dell Laptop

    http://www.ehow.com/how_5544182_switch-external-monitor-dell-laptop.

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  1. Anonymous
    2012-06-18T15:13:57+00:00

    Suze

    Try another monitor to see if the monitor has gone bad. Plug the monitor into another computer, does it work?

    Check the setting on the monitor itself. Brightness up, contrast up.

    If the Monitor attaches to a Graphics Adapter that is in a card slot on your computer,

    turn off the computer and check if the graphics card is firmly seated in the slot. And the cable is firmly plugged into the card.

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  1. Anonymous
    2017-11-23T02:17:11+00:00

    I am having same problem with desktop that has intel mother board.

    Was working fine until updates on Nov 17th, using Windows 10 version 1703.

    If I use Sleep then on wake up I get no monitor. I have Shutdown.

    Monitor works after a cold boot. Tried turning off fast boot and no change.

    The only thing I do to wake it up is to tap the keyboard or move mouse. I use no devices to wake up.

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  2. Anonymous
    2017-05-30T17:11:18+00:00

    If your monitor is made by Samsung then the cause of this behaviour is often the capacitors in the monitor's power supply. 

    7 of them should be replaced: four of 820mF 25V; two of 1000mF 16V and one of 330mF 10V.  All are on the power supply board.

    The capacitors do NOT need to be showing signs of stress (i.e. bulging end caps) to be defective.  Just replace them.

    This cause has nothing to do with the computer, its operating system or the monitor's driver.  It is entirely a hardware failure in the monitor's power supply.  The monitor may otherwise work normally, so that makes this cause easily overlooked.

     How does one go about replacing those?

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