Monitor Going to Sleep at Startup; Can't Even Run Diagnostics or Repairs

Months and months ago, my system stopped waking up from sleep mode. Unable to find a solution, I abandoned using sleep mode and rebooted on each use. The other week, it began going into sleep mode while just randomly browsing the web. It would then take multiple hard reboots (holding in the power key) until it would come back up. Multiple because it would fall asleep again during reboot, so I'd have to do it a few times to finally get it to stay awake.
Last night, as lucks x-mas gift to me, it did this again. Only this time it will not come back after a half-dozen hard boots. It keeps falling asleep while booting up or running diagnostics or repairs or any of the other options I can briefly try.
I have tried another monitor; it still gives me the "no input signal" error. So now I know it isn't the monitor. Which leaves the video card, the motherboard, the power supply, and the operating system as the culprits.
I can't test any of them though because as I said, it falls asleep while running boot-up diagnostics, repairs, or just anything else.
The inside of my machine is clean; did that when it began doing this. I also smelled the very faint aroma of ozone last night when it crashed and refused to wake this latest time, which could mean it's a card issue and the card is fried.
I'm at my wits end and about to give up on it. All I know is that I won't be buying anymore HP products. The number of threads about similar issues to mine is staggering, and no one seems to be able to offer an actual solution from HP.
If anyone has any last minute ideas... I'll give them a whirl.
This question was solved.
View Solution.

It could be the graphics driver needs to be install for the onboard. If you can run the diagnostics or whatever you wanted to run and then install a new video card, it will probably need a driver anyways. If you want to try inatalling the onboard graphics driver, try this: http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=pv-63977-1&cc=us&dlc=en&lc=en&...
That may say it is for a different PC but it uses the same motherboard as yours.
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Ok, I've dealt with this problem long enough. I have an HP pavilion Elite, hpe 400f. Monitor worked great on it, then one night while I was checking my email, the picture went scrabled, and ever since I am faced with a "Monitor Going to sleep" error on start up. I can not get into my settings or do anything.
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This question was solved.
View Solution.

Hello @ddanh123,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I have read your post on how your monitor is faced with a "going to sleep" error message on startup, and I would be happy to assist you in this matter!
To restore the display on your desktop computer, I recommend following this document on Flat Panel Monitor Displays Message about No Signal, Signal out of Range, Sleep, or Power Save. This should help examine any possible steps that may have been missed.
If the issue persists, please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
I hope this helps!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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[ SOLVED ] Cant stop monitor going to sleep

Hi .... How can i stop the monitor going to sleep after about 5 or 10 minutes of being idle ? I have tried xfce4-power-manager and that has no effect no matter what settings i try ..
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All i have is Option "DPMS" "False" in my xorg.conf, but i suppose setting the timers to zero would, as a side-effect, turn dpms off as well.
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man xorg.conf
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Hello @rosendahl14,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
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Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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'''Anonymous'''
Please post a separate question. Thank you. https://support.mozilla.com/tiki-ask_a_question.php?locale=en-US&forumId=1
'''chris'''
'''''Crashing'''''
See:
http://support.mozilla.com/en-US/kb/Firefox+crashes
http://kb.mozillazine.org/Firefox_crashes
http://support.mozilla.com/en-US/kb/Firefox+crashes+when+loading+certain+pages
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[[Firefox is already running but is not responding]]
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'''chris'''
'''''Other Issues''''': ~~red:You have installed plug-ins with known security issues. You should update them immediately.~~
'''Update Java''': your ver. 1.6.0.~~red:17~~; current ver. 1.6.0.20 (important security update 04-15-2010)
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''"'''Bug Fixes'''''
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*'''NOTE for IE:''' Firefox and most other browsers use a Plugin. IE uses an ActiveX version of Flash. To install/update the IE ActiveX Adobe Flash Player, same instructions as above, except use IE to download the ActiveX Flash installer. See: [[ActiveX]]
*Also see: http://kb.mozillazine.org/Flash ~~red:'''''AND'''''~~ [[How do I edit options to add Adobe to the list of allowed sites]]
'''Update Shockwave for Director (aka Shockwave Player)''': your ver. ~~red:10.1 (very old)~~; current ver. 11.5.7.609 (important security update released 2010-05-11; see http://www.adobe.com/support/security/bulletins/apsb10-12.html)
NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player.
~~red:Check your version here~~: http://www.mozilla.com/en-US/plugincheck/
SAVE the installer to your hard drive (Desktop is a good place so you can find it). When the download is complete, exit Firefox (File > Exit), locate and double-click in the installer you just downloaded, let the install complete.
See: '''[http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox#_Installing_Shockwave Installing Shockwave]'''
'''You '''~~red:'''MAY'''~~''' need to Update Adobe Reader for Firefox (aka Adobe PDF Plug-In For Firefox)''': your ver. N/A; current ver. 9.3.3 (important security update release 06-29-2010; see: http://www.adobe.com/support/security/bulletins/apsb10-15.html)
~~red:Check your version here~~: http://www.mozilla.com/en-US/plugincheck/
See: http://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox#Installing_and_updating_Adobe_Reader
''You may be able to update from the Adobe Reader installed on your system'' instead of going to the Adobe site and downloading. Open the Adobe Reader installed on your system (''in Windows, Start > Program Files, find and click Adobe Reader to open''), click Help, click Check for Updates.
''If you go to the Adobe site to download the current Adobe Reader:''
-'''use Firefox to download''' and '''SAVE to your hard drive''' (save to Desktop for easy access)
~~red:-See the images at the bottom left of this post to see the steps to take on the Adobe site~~
-exit Firefox (File > Exit)
-In Windows: check to see that Firefox is completely closed (''Ctrl+Alt+Del, choose Task Manager, click Processes tab, if "firefox.exe" is on the list, right-click "firefox.exe" and choose End process, close the Task Manager window'')
-In Windows: double-click on the Adobe Reader installer you just downloaded to install/update Adobe Reader
*'''NOTE: On Vista and Windows 7''' you may need to run the plugin installer as Administrator by starting the installer via the right-click context menu if you do not get an UAC prompt to ask for permission to continue (i.e nothing seems to happen). See this: http://vistasupport.mvps.org/run_as_administrator.htm
*'''NOTE for IE:''' Firefox and most other browsers use a Plugin. IE uses an ActiveX version. To install/update the IE ActiveX version, same instructions as above, except use IE to download the ActiveX installer. See: [[ActiveX]]
*Also see: http://kb.mozillazine.org/Adobe_Reader ~~red:'''''AND'''''~~ [[How do I edit options to add Adobe to the list of allowed sites]]

Monitor Going to Sleep at Startup; Can't Even Run Diagnostic​s or Repairs

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Monitor Going to Sleep at Startup; Can't Even Run Diagnostics or Repairs