Question about HP Compaq P900 (Pearl, White) 19" CRT Monitor

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P900 standby problem

When I turn on computer, monitor "wake up" for few seconds, blinking come times and switched to standby mode again. Then I turn monitor off, turn on 2-3 times and it start working.
Can you help me I this trouble?

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6 Suggested Answers

  • 97 Answers

SOURCE: Monitor using 100% cpu and on the blink

Video card is plugged via DVI cable? If the board in the flat panel is going bad ( main signal pcb) video card can be going up and down scale to control its sync with no luck, causing the CPU useage problem.Only ever seen this once. Normally, the monitor will not cause and performance issues other than you cannot see anything.

Posted on Apr 29, 2007

  • 1 Answer

SOURCE: No DVi input, then computer goes to sleep

Hi publicworker,

I had a similar problem whereas my monitor went to sleep mode after a few minutes. I'm running an HP LP 2065 in dual mode with another HP flat screen. However, I did resolve the issue after resetting the output settings.

How to do that:

  • right mouse click on the desktop
  • select graphic options
  • output to
  • extended desktop
Maybe some changings/modification will help you too.


Posted on Apr 27, 2009

  • 585 Answers

SOURCE: Dell E152FP monitor goes black at startup, but not permanently

My bet is that your monitor is on it's way out. If this is true, it will get worse until it gets to a point where it no longer works at all. Connecting the monitor to another computer should confirm my suspicion. The monitor has probably developed a problem with some capacitors inside. The parts are not expensive, but finding a shop to do the work at all may be a challenge. If you're handy with a soldering iron you might want to have a try at it.

Posted on Jun 13, 2009

  • 1 Answer

SOURCE: My monitor will not wake up

I wm having this same issue. Dis you ever get this resolved?

Posted on Oct 22, 2009

  • 11361 Answers

SOURCE: HP f2105 monitor going into sleep mode on it's own

Does it do the same when you use this monitor with other PC, new VGA cable, just need to narrow down the problem first before start taking the monitor apart.
See pictures of what usually goes bad (mostly failed capacitors) with monitors:
Post back what you find so we can guide you further

Posted on Apr 04, 2010



The picture board on your monitor is faulty or bad, since it goes black after few minutes, it means the picture board of your monitor has developed fault.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity to help with the replacement of the picture board or any service center because the fault is not something you can fix yourself. in order not to complicate issues.

Take care.

Posted on Apr 21, 2010

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I unplugged my computer and turned off the monitor to save power since we were not using. Now with the computer plugged in, when I turn monitor on the green light just blinks.

Make sure the data plug is in correctly. Turn the computer on. No you can try using the power button on the monitor to power it off and on. Or you may need to pull the power for the monitor out of the plug and then put it back in.

The blinking light means the monitor is in sleep mode. They need activity on the data or signal cable before they wake up. Unfortunately sometimes they get stuck and you have to reboot them to wake them up. I have seen a few where they had failed and would not come out of sleep mode but that is pretty rare. Usually you just have to sweet talk it and threaten it a bit and pull it plug a few times and all of a sudden it will start up,

Feb 01, 2011 | Hanns.G Corporation HW173D Monitor

1 Answer

Monitor don't want to turn on. just blinking. what is the problem?

Sound like the video card is at fault on your PC it sends a signal to wake up the monitor if this is not present then PC may appear to start the monitor will be in standby but remains blank.

Replace your video card even if the BIOS chip says that it is present this will solve you problem

Apr 24, 2010 | Acer P191WBD LCD Monitor

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The power button keeps blinking every 2-3 seconds and the screen is black and wont turn on

It sounds like it is in "sleep mode"

Try pressing any key on the keyboard and see if it wakes up.

Nov 04, 2009 | Gateway HD1900 19" Monitor

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Dell SE198WFP 19" LCD won't come out of standby

I went into the BIOS (with F2 during restart) and changed a value -- IIRC it was called something like "power management scheme" -- from the default S3 to the other choice, S1. Now the old Dell XP Dimension 2350 will go into and out of Standby correctly and the new SE198WFP 19" LCD will too.

Oct 05, 2009 | Dell SE198WFP LCD Monitor

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Dell E173FP Monitor requires unplugging/plugging back in to wake

Perhaps your computer is hibernating instead of going into standby which takes a little longer to wake up from. While you are playing plugs and cables it give it enough time to come out of hibernation.

When the computer is in this mode the USB ports turn off which disables keyboard and mouse so the only way to wake up the computer is to press the power button on the computer itself.

One tell tale sign a computer is in hibernation is that the power light on the computer will slowly blink.

I hope this helps.

Aug 08, 2009 | Dell Computer Monitors

2 Answers

It turns off, or goes to sleep. Won't wake up.

Hello there topothemorni,

Are you familiar with Windows' "Power Options" module, and that within it you can tweak all things related to power saving (e.g., system sleep, hibernate, and automatic MONITOR shut off)? More than likely you just need to make a visit there and make some desired adjustments.

[Control Panel > Power Options]
... OR ...
Start > Run > type "powercfg.cpl" (without quotes), then hit Enter.

Once there, you'll probably find most everything self-explanatory.

Also, it may be responding to configurations adjustable from within the monitor itself. Somewhere on the monitor there will be a OSD (On Screen Display / Setup) button of some type, where from there you'll be able to make whatever necessary tweaks. Refer to its documentation if you don't find it self-explanatory.

Good luck and please let me know if you have any further questions, and/or just to let me know how things worked out.

"Today's the best day of my life...and NOW you're part of it!"

Mar 26, 2009 | Computer Monitors

1 Answer


what is wrong? its damaged internally on one of the pcb boards most likely the power board, you will need to take it in to a service center to know what is exactly wrong

May 10, 2008 | Sony 21" Trinitron P202 Flat Screen...

1 Answer

Viewsonic VA2012w Wont go into standby with computer.

turns out it may be a heating problem. cut a few extra vent holes in it and seems to be fine.

Sep 08, 2007 | ViewSonic VA2012WB Monitor

1 Answer

Monitor setting Here is the site to update the monitor drivers for the P900. not sure what kind of video card you have but you should update the drivers too. I just put the nVidia site incase that was your brand. Good Luck, Tim.

Feb 12, 2007 | HP Compaq P900 (Pearl, White) 19" CRT...

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