I understand that you are having issues with the HP Pavilion 22bw Backlit Monitor not staying on. I am providing you with some steps for you to try below:
Step 1. Unplug the power cord from the back of the monitor and the wall
Step 2. Hold the power button down for at least one minute
Step 3. Plug the power cord back into the monitor and then into the wall outlet (not a power bar or surge protector)
Step 4. Press the Menu button on the monitor
Step 5. Navigate to the Factory Reset option and select it
If the issue persists after this you can try the monitor on another computer to see if it continues. If it does it appears to be a physical issue and I think it would be best if you contact HP Technical Support for repair options.
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Dunidar I work on behalf of HP
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I'm sorry to revive and old post but I have been having the exact same problem. It's been happening for about two months, I have followed the advice on this post and I find that it helps for a few minutes longer but it continues to turn off and I have to again unplug it and plug it back in. My husband has the same monitor and I even swapped out each peice of the power cord and power box to see if it was a problem with the cord but it still turns off. I have tried different plugs in my house as well, all without fixing the problem. What else can I try? I am a photographer and trying to edit photos while the monitor keeps turning off is highly frustrating. Thank you!