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Computer monitor comes on for 1 seconds, flashes "analog power save mode" and then goes black.

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Most monitors will say "Power save mode" when they can tell through residual voltage that the signal lead is plugged into a machine, but there's no picture being transmitted. The four states of a monitor are:

* Off entirely.
* Switched on, plugged into a computer but no video signal being received - usually displays "analog power save mode" or "digital power save mode" for a few seconds, then blanks. Comes back to life the moment a video signal is received. This state is the default in full power saving mode.
* Switched on, not plugged into a computer. Some monitors don't display anything, some go into power saving mode, some fly "CHECK SIGNAL CABLE" or a similar message around the screen. Picture is restored when the signal cable is plugged back into the computer
* On fully, receiving an image, and displaying.

Hope this helps.

Posted on Jun 01, 2008

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My pc was taken apart so I could move. When I hooked it back up the monitor comes on for a couple seconds and says that my pc is in analog power saving mode. The power light on the tower just blinks c


It might be in a corrupted hybernation mode.
Try turning the computer off by pushing the power button for 10 seconds and then do not choose resume but the other option.

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Monitor in power save mode and will not restore a picture.


Check all your video cables and check your keyboard and mouse cables. If everything is ok, reboot computer.

BTW - What color is the power indicator?

Jun 27, 2012 | Dell Dimension 8400 PC Desktop

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Have lg monitor flatron e2260 . Have had for about 3 weeks. Starting today, the monitor goes black and states "d-sub power saving mode". The tower stays on. Thx


1. Check the connections and make sure they are still tight. If the monitor isn't getting data signal it can go into power saving mode. Since it was working I would check this first.

2. Look in control panel under POWER OPTIONS and make sure it's not set to turn off after so long.

3. Also check the settings for your screensaver under display settings. That too could put it into poewr saver mode.

It could be a setting on the monitor itself that somehow got changed. Check out the settings to see if anything has changed.

Apr 21, 2011 | LG PC Desktops

1 Answer

When I turn on my PC Windows starts fir 4 seconds then I see on flat monitor LG "Analog Power Saving Mode" and LG monitor goes off (yellow light on monitor panel). Please help.


Windows is severely corrupted and crashes during launch. It's too late to try to fix it, you will have to reinstall it using the recovery disk that came with the pc.

Dec 11, 2010 | PC Desktops

1 Answer

Acer 2416W monitor comes on for 1 second then goes black


try a different monitor
could be video card problem
best if can try a known good one
does power light stay green and hd light flash like activity continues, can you boot in safe mode, if so might be video driver , also looked for popped capacitors on mb , if computer actually goes off try a know good power supply

Sep 02, 2010 | PC Desktops

1 Answer

My monitor shuts down after one second.


Dell monitors automatically go into power-save mode after a preset amount of time when the computer is inactive. The Dell monitor will go completely black, instead of showing a screensaver. This doesn't mean that your Dell computermag-glass_10x10.gif has shut down. Instead, this allows your monitor to essentially turn off until it's needed again. You can change how long it is before the Dell monitor goes into power-save mode by changing your display settings.
  1. Step 1 Press any key on your keyboard or move your mouse. Either will turn off power-save mode. Alternately, you can press the power button on your Dell computer tower or laptop.
  2. Step 2 Press any key a second time if the monitor goes from power-save to stand-by mode. Stand-by mode allows the screensaver to appear.
  3. Step 3 Enter your user name and password into the login prompt if your computer requires a login. Press "Enter" to begin using your Dell computer.
  4. Step 4 Change the display settings on your Dell monitor to prevent your monitor from going into power-save mode prematurely. Right-click anywhere on your desktop and choose "Properties." Click the "Screensaver" tab and press "Power." Beside "Turn off Monitor," choose a time amount from the drop-down list and press "Apply."

Nov 13, 2009 | Dell Dimension 3100 PC Desktop

3 Answers

Dell e228wfp flat panel. periodically goes blank. when i power off the on promp " 1. Auto detect ( Analog signal )" is up . . . just for a moment then screen goes blank.


It's heat related and possibly a backlight issue - mine only does it when the monitor has been powered on for about 2 hours. If I turn it off for an hour, I can get another 2-hour stretch out of it. Happens in self-test mode, so that's the cruncher. It's taken 2 days and many laborious hours on the phone, but Dell is sending me a replacement monitor tomorrow. There are more people with the problem here: http://en.community.dell.com/forums/t/19245356.aspx. Hope you get yours replaced too...

Nov 15, 2008 | PC Desktops

1 Answer

Monitor goes blank less than a second after turning on.


do you have an aftermarket video card. In the bios you have to tell the computer if it is looking for a agp/onboard or PCI video card. Either that or the video driver or settings are wrong Try safe mode to check

Jun 25, 2008 | Dell Dimension 2400 PC Desktop

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