Monitor goes to sleep right at start up.

October 29, 2011 at 13:42:33
Specs: Windows XP
Monitor goes to sleep at start up. The computer is a Dell Optiplex SX230 desktop that we purchased at an auction for a specific program that is installed on it. Tested the monitor on a different computer and monitor is okay. I was able to put the computer in safe mode and changed the display setting in Windows, but still having the same issue. Also, changed the BIOS battery.

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October 29, 2011 at 18:48:57
Monitors DO NOT "go to sleep" on their own. The operating system has to "tell" them to "go to sleep" (turn off the video), and it NEVER does that when you load Windows normally, first thing.

If you always have video while booting BEFORE the operating system is supposed to load,
but your problerm is you have NO video once the operating system is supposed to load, your specific video drivers are probably not detecting your monitor properly.
That's easy to fix.

See response 9 here:


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October 31, 2011 at 09:58:02
Thanks, so much for answering my post. I followed your directions by going into the VGA mode. I selected the Plug N Play monitor, which was the only one listed, finished the set up, but when closing out all of the screens, the monitor went black again. I have tried this several times, but still doing the same thing. I am now in the process of trying to get the computer hooked up to the internet so that I can try to download a driver for the monitor to see if that works. Any other suggestions?

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October 31, 2011 at 11:02:52
You MUST close all the windows properly after you have selected Plug-n-Play Monitor so that settings are saved - e.g. click on OK or whatever at the bottom of the Window, otherwise the setting won't "stick."
You may need to Restart Windows as well.
If you Restarted Windows after you changed the monitor drivers in Enable VGA mode so you could try booting Windows normally, you should have video in Windows, unless, possibly, you may not get video in Windows if you have set some other setting in Display Properties wrong.

If you're SURE you did that, you may have the monitor set to a resolution or other setting it can't display.
As I said at that link, if you have an LCD (or Plasma, or LED LCD) monitor, you should load the specific drivers for the model rather than Plug-n-Play Monitor drivers.
That info also tells you how to set your monitor resolution properly

If you can't figure out what you have set wrong, tell us the make and model of the monitor you're using.

Or - if the monitor was ALREADY SET to Plug-n-Play Monitor when you looked at the setting in Enable VGA mode and you didn't CHANGE whatever it was and Save settings, to re-set the other settings to defaults that may have been set wrong, this should work and you will have video in Windows when you boot normally
- if you follow the directions and load Default Monitor instead, save settings, then go back in and select Plug-n-Play Monitor , Save settings
- OR - if you load specific drivers for your monitor model, Save settings. .

( E.g. If the Display Properties settings were set for use with a CRT monitor previously, CRT monitors can use settings that result in NO video on an LCD, Plasma, or LED LCD monitor , even in the Plug-n-Play Monitor settings.).


"I am now in the process of trying to get the computer hooked up to the internet so that I can try to download a driver for the monitor to see if that works."

If you have not described your problem properly.....

You should ALWAYS have video while booting the computer BEFORE Windows is supposed to load.
The monitor, video adapter, and the mboard DO NOT require any software on the hard drive BEFORE the operating system loads in order to produce video..

If you are NOT getting video while booting BEFORE Windows is supposed to load, ALL THE TIME, or SOMETIMES, then you have a hardware problem, not a software problem.

If your video disappears while you were in Enable VGA mode, you may have a hardware problem !

If something has been set in Windows to turn off the video, or go into Standby or Hibernate mode, after xx minutes of user inactivity....

- If you're sure the main chipset drivers for your mboard have been loaded, if the video doesn't come back on when you press a key or move your mouse or press a button on your mouse, you probably DO have a hardware problem.

- If you HAVE NOT loaded the main chipset drivers for your mboard, then load them - the problem MAY then go away.

(Standby mode, Hibernate mode, "Wake on...'' or similar settings in the bios, and the Power settings in Control Panel , and sometimes Restart - often DO NOT work properly unless the main chipset drivers for the mboard have been loaded in Windows.

You may not be able to get the video to come back when whatever it is has been triggered to turn off the video. In that case, if you hold the power button in or down for at least 4 seconds until the mboard shuts off, when you boot the computer again the video will be fine again, at the very least while booting BEFORE Windows has loaded)

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