When i press the power button to turn off monitor, i get a power button lockout message. how do i unlock the power button

have you tried the following steps:

Press and hold the "Power" key on your monitor to turn it on. Press the "Menu" button for 15 to 20 seconds to cancel the OSD lockout message.

Press the "Power" button on your monitor for several seconds until you see the OSD lockout message disappear. Unplug and re-plug your monitor power cable back into the outlet if the OSD lockout message is still displayed.

Turn your computer's monitor off. Press the "Menu" button for 15 to 20 seconds and power your monitor back on.

Read more : http://www.ehow.com/how_10015851_fix-osd-lockouts.html

to remove the OSD Lockout message, release the Menu button (if something was pressing against it), and press and hold the Menu button again for about 10 seconds - until the message goes away.

== see if this helps==

Hi there.
OSD Lockout or On Screen Display Lockout message is that irritating on-screen message that sometimes pops up when you switch on your monitor. This completely locks all monitor settings.
This problem has most likely happened to everybody at some stage or another. Everything has worked fine until now you turn on your monitor and have a message glaring you in the face displaying something about "OSD Lockout". This doesn't allow you to change any of your monitors settings, including the setting intended to turn off this message. While this problem mainly happens on HP monitors from my looking around I know that others have encountered it on other brands as well. The fixes I provide below should work on those monitors too so don't fear if your monitor isn't an HP model.
The HP Fixes
FIX 1
Plug in the monitor and power it up. Hold down the monitor's Power button until you get a message saying "OSD Unlocked". If the problem persists after OSD is unlocked then unplug the monitor from the wall, wait a few seconds (just to be sure I'd give it anything around 20-30 seconds) and then try again.
FIX 2
Instead of holding down the Power button, turn on the monitor and hold down the Menu button for 10-20 seconds. This should unlock the OSD.
FIX 3
Turn off the monitor, press down the Menu button and then turn on the monitor. Wait 10-20 seconds. This should unlock the OSD.
FIX 4
The Menu button may be stuck in a pressed in position. To get it "unstuck" you'll usually need to open up the monitor. If your not a seasoned veteran at opening up electronics (and knowing where all the screws go back into) then this could be tricky unless you know what you're doing. Unfortunately there are too many models of monitors for me to give a step by step instruction guide for you. If you have warranty this is where you should use it, I suggest you contact the manufacturer.
The AOC Fixes
FIX 1
Turn off the monitor, hold menu and power button together for 10 seconds then turn back on.
Currently these are the most commeon fixes.
~ Slasher_X

Try holding the power button or the menu button of the monitor for about 5 - 10 seconds. This should remove the OSD Lockout message. Consult your monitor's reference manual if you still have problems.

Lockouts occur when the software driving the OSD encounters a problem or conflict--akin to your PC's operating system freezing.
Follow this link for more info: http://www.thefakegeek.com/2009/04/how-to-unlock-an-osd-lockout-problem/

Basically you have Four options to solve an OSD lockout.

Fix One: Plug in the monitor and power it up. Hold down the Power button until you get a message saying "OSD Unlocked". If the problem persists after OSD is unlocked then unplug the monitor from the wall, wait 20 seconds and try again.

Fix Two: Turn on the monitor and hold down the Menu button for 10-20 seconds. This should unlock the OSD.

Fix Three: Turn off the monitor, press down the Menu button and then turn on the monitor. Wait 10-20 seconds. This should unlock the OSD.

Fix Four: The Menu button may be stuck in a pressed in position. To get it "unstuck" you'll usually need to open up the monitor. This could be tricky unless you know what you're doing. Unfortunately there are too many models of monitor for me to provide detailed instructions. If you have warranty this is where you want to contact the manufacturer.

Good luck and thanks for using FixYa.

How to Unlock an "OSD Lockout" Problem

monitor, osd lockout Posted in Fixes ' Comments (32)
This has most likely annoyed many of you at some point. You turn on your monitor one day and see a jeering message telling you something about an "OSD Lockout". It doesn't allow you to change any of your monitors settings, including the setting intended to turn off this message. While I've only seen this error on HP monitors I know that others have encountered it on other brands as well. The fixes I provide should work on those monitors too. (Note: OSD stands for On Screen Display.)
Fix One: Plug in the monitor and power it up. Hold down the Power button until you get a message saying "OSD Unlocked". If the problem persists after OSD is unlocked then unplug the monitor from the wall, wait 20 seconds and try again.
Fix Two: Turn on the monitor and hold down the Menu button for 10-20 seconds. This should unlock the OSD.
Fix Three: Turn off the monitor, press down the Menu button and then turn on the monitor. Wait 10-20 seconds. This should unlock the OSD.
Fix Four: The Menu button may be stuck in a pressed in position. To get it "unstuck" you'll usually need to open up the monitor. This could be tricky unless you know what you're doing. Unfortunately there are too many models of monitor for me to provide detailed instructions. If you have warranty this is where you want to contact the manufacturer.
If you know of any other fixes feel free to contact me. Good luck!
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Techbelkin please rate me

Hi,
try..... it worked for me. Power Button Lockout is displayed.The monitor's Power Button Lockout function is enabled.
Press and hold the power button for 10 seconds to unlock
the power button function.

Thanks for using Fixya
Proton

How to unlock HP 1940 LCD monitor?? i try with holding menu button and power also..but didnt show me unlock...i hold like 1min even more...and its keep to blink OSD lock...and Main Menu on my screen.Can u tell what i need to do Thank you

OSD Lockout prevents changes being made to the monitor through the use of the front panel buttons. When the OSD is locked, pressing a button from front panel displays OSD Lock-out for about 10 seconds. You can quickly remove the OSD Lockout message by pressing a front panel button again. To unlock the OSD, press and hold the Menu button until the Main menu displays, about 10 seconds. To lock the OSD, press and hold the Menu button until an OSD-Lockout message displays, about 10 seconds.

Please try to Turn the monitor off. Hold down the Menu button while the monitor is turned off, then press the Power button again to turn the monitor back on. This should unlock your OSD menu and remove that message from your screen. best regards