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On bootup monitor goes immediately into POWER SAVE MODE

by Patches_1 / March 26, 2013 9:12 AM PDT

I hope this post isn't too vague. I did find plenty of posts on the web where others have the same problem of the monitor immediately going into power saver mode upon boot up. In my case, the monitor is Dell P190S, 18-20" about 2 years old, OS is Win7, Acer computer purchased December 2012. On start-up "Auto Detect (ANALOG INPUT) entering power save" mode is displayed. I couldn't get to Control Panel or bios of course because nothing displays on the screen. Using the buttons on the front of the monitor I got text display which indicated 'there is no signal coming from the computer' with a message to wake up computer by using any key. Of course I'd tried that with no change in the monitor display. I finally got a menu via those buttons on monitor and chose to restore factory defaults and was able to get a view of webpages and email etc.

So my question is: could this be a monitor issue or could it be that when the computer goes into power saver mode there is some conflict with the Globe EnerSave power bar I'm using? (the EnerSave bar basically shuts off all peripherals when shutting down the computer). Any thoughts or suggestions are very welcome!

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All Answers

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It could be your video adapter, but try this
by wpgwpg / March 26, 2013 9:30 AM PDT

First, you can unplug the computer & monitor from the EnerSave power bar and plug them into a surge protector or other AC power. If you do it without a surge protector, be sure to pick a time when there're no storms in your area! After testing, you should go back to your normal hookup. If the problem still persists, try booting to Safe Mode and see if that makes a difference. It could be that somehow your display resolution got set to something the hardware can't support. If neither of these things help, you've probably got a hardware video problem.

Good luck.

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Tx for fast response
by Patches_1 / March 26, 2013 10:04 AM PDT

I will post back on results.

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Don't know why
by Patches_1 / March 28, 2013 7:45 AM PDT
In reply to: Tx for fast response

The monitor has been working perfectly since I did the factory reset, as outlined above. It's a bit frustrating because I'd like to know WHY this happened. If I have a recurrence again I will first switch out the power bar for another. If there are other issues I will be sure to post back in case it helps someone else down the road.
Cheers for now ...

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Solution for MAcbook PRO and Dell u2751h
by David Jorgensen / July 21, 2015 11:29 AM PDT

I have had the same problem with my 2009 Macbook pro and Dell u2751h

Here are the solutions I have found to work:

1. Energy Settings: Under energy setting make sure your computer is set to high performance. This ensures the onboard graphics arent used. I assume the onboard graphics card may not be powerful enough to run some high performance monitors.

2. Restart the computer with the monitor unplugged and before you type in your password in the log in screen plug your monitor in. Im not sure why this seems to work some time but it just does.

3. Reset SMC and PRAM and retry above steps.

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