Monitor will not turn on

After years of good service, my monitor will not turn on when I turn on the MacPro. 

I am sorry to hear that.
Tell us some model numbers for your display, your display card, which Mac Pro, and stuff like that and Readers would love to speculate on what the most likely problem (and maybe even solutions) might be.

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  • Monitor will not turn on with new graphics card

    I have a h8-1070t and added a Powercolor 7870 myst graphics card, but the monitor, keyboard, and mouse will not power on.  I tried this same card in my friends pc, works fine. I have a 600w powersupply and running windows 7 and currently  using an old  Saphire 1950 graphics card; works fine.
    Could there be a problem with my power supply?or windows 7?
    thanks for any advice

    I am having this same issue with a powercolor hd7850.  I have an HPE H8-1214.  Any ideas on this will definitely help.  card works great in my other comp but I am wanting to use it in this computer.

  • HT1343 My computer crashed and will not start. My keyboard is on but my monitor will not turn on. I know there is a way to restart the system by pressing both command keys as well as both shift keys along with 2 other letters. I can't remember what those

    Can anyone help?

    Here you go >  Resetting the PRAM
    If a PRAM reset doesn't help, try accessing OS X Recovery.
    Shut down the Mac and wait about ten second\s.
    Then startup your Mac while holding down the Command + R keys. Let go of those keys when you see the spinning progresss indicator.
    With any luck, you'll be able to access the built in utilities to verify and if necessary, repair the startup disk.
    OS X: About OS X Recovery
    message edited by:  cs

  • T520: Monitor does not turn on after boot or waking from sleep

    I have a pretty standard T520, the only modifications are upgrading to a larger battery and higher screen resolution (1600x1200), and am currently running windows 7 64bit.  Whenever I turn on the machine from a powered off state, or if I try and wake it up from being asleep, 2/3 of the time the monitor will fail to turn on.  I am only able to remedy this by closing the lid, letting it go to sleep again, opening it again, holding down the fn key (if that even helps), and hoping it turns on the next time.  On a fresh boot, the screen backlight is on, but there is never anything displayed on the monitor, so I cannot even go in to the BIOS.  To get to the BIOS, I have to boot normally, repeatedly open/close the monitor until it displays something, reboot, and hope the monitor is still working after the reboot.
    The forum posts I have seen on this topic seem to only relate to this problem with external monitors; however, this is occuring with the laptop monitor itself.
    Has anyone else had this issue, or know of ways to correct it?

    One other note: I am not hearing the hard drive start spinning on the times that the monitor does not turn on when returning from hibernate.  When the monitor does turn on, there is the distinct sound of the hard drive starting up, and I can feel a bit of torque within the laptop from the hdd.

  • F2105 HP Monitor Will NOT Stay Awake

    Failed to awaken when W8 computer did.
    Have tried the monitor on W7, XP, another W8 computer and a Mac OsX - on all of which the monitor had previously worked.
    When the monitor is first hooked up (VGA, DVI) or turned on the monitor shows the expected display for about 3 seconds and then announces that it is going to sleep due to no input.
    The menu button does nada. Nor does holding down either the power button or the menu button for 2 minutes.
    I see reports of this on the forum going back to 2010, but no one seems to have solved the issue that I can see.
    To me it seems that it might well be a firmware issue on the monitor's board. Does anyone know how the firmware can be rebooted or replaced?

    Hello @PanzerFaust,
    I understand that your HP f2105 21 inch LCD Monitor will not stay awake and you are looking for a resolution to this issue. I am providing you with some steps you can 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 above steps did not resolve your issue you can try the monitor on a computer or other device to see if the issue persists. If it does I think it would be best if you contact HP Technical Support for repair options.
    Thank you for posting on the HP Forums. Have a great day!
    Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
    Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
    Dunidar
    I work on behalf of HP
    Find out a bit more about me by checking out my profile!
    "Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

  • 27" imac will not turn disply on after waking up from sleeping

    I have 27" imac with 2nd monitor attached.  when in sleep mode the 2nd monitor will wake up but the imac itself will not turn the screen on. (what is funny is that i can log in but the only monitor i can actually see is my 2nd one.) i must play with the power button several times to either get the imac to reboot or to wake up.  any fix out there?

    I have had this same problem with my mid 27inch mac 2011.  I recently yesterday took it to the genuis bar so they could try to give me a solution.  I showed the technicians many threads with my same problem and they acted as if I was crazy and the issue was absurd/ non valid.  This problem only started happening when I upgraded to lion.  I suppose to get the coputer back in a couple of days.  The onl god thing I had going was all the kernal panics that were listed because of the machine having to be restarted everytime.  I will provide any informatio they give me.

  • My 2010 iMac Will Not Turn On

    Like the title says it will not turn on, no liquid spilled or anything, I had used it as a computer for some years but as of 2013 I got a great macbook that was faster so I have only been using it as an external monitor for my Macbook(target display), and one night I powered off my laptop, and the iMac went black and never turned back on.  It just stays black, no audible sounds through the speaker, no fans turning on, it just is completely dead like.
    That only things I have tried is pressing the power button, and pressing and holding the power button, I have unplugged it for a minute and tried again, I have also left it unplugged overnight and tried with still nothing.
    Since I have been using my macbook I can't remember what OS i was on, but I think it was just Mountain Lion.
    SAVE ME BARRY!!!
    Thanks Much
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    If it makes no noise or has no graphics that show on the display this indicates it may be a power supply failure. Take it into an Apple Store or Apple Authorized Service Provider (AASP) to be fixed.

  • Monitor will not shut off

    I have a HyVision mv220 LCD monitor. After I shut down the Mac Pro the monitor will remain on with an odd blueish screen. In order to get the monitor to shut down I have to turn it off with the power button. I also tried this using Bootcamp and on the PC side the monitor will shut off (or power down or sleep... what ever it is called) when I shutdown. Anyone know how to fix this?

    Hello @rstone2737,
    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 understand that the amber light which shuts down your computer monitor will not power down, and I would be happy to assist you in this matter!
    I am providing you with some steps you can 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
    Step 6. Try a different cable connecting your monitor to your computer
    If the above steps did not resolve your issue you can try the monitor on a computer or other device to see 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
    Thank you for posting on the HP Forums. Have a great day!
    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!

  • My computer will not turn on but the psu light is on.

    My Hp Slimline Will not Turn on. Last Night I Turned It Off And this morning i Turned it on and  about 5 minutes later the computer turned its self off. The Cpu Light is on. But the Power outlet is okay and i Tried Everything. HELP!

    First, what is the model or product number of your pc?
    Next, what exactly happens?
    Turn off your computer and your monitor.
    Disconnect the power cord from the pc and from the wall outlet.
    Disconnect any external devices other than the monitor, keyboard and mouse. Disconnect any printers, cameras, external hard drives, etc.
    Hold in the power button and count to 10. (yes, with no power)
    Plug in the power cord directly into a wall outlet and into the pc.
    Turn on the computer.
    Turn on the monitor.
    What happens?
    Do we have blue lights on the power buttons for the pc and monitor?
    Do any other lights come on?
    Do you hear any sounds?
    Does anything come on the monitor?
    Does the monitor display any message?
    On the back of the computer there should be a small light near the power cord - is it on?
    Also, how is the monitor connected to the pc? VGA cable with blue ends, DVI with white ends, HDMI?
    I am an employee of Hewlett Packard.
    - - Please mark Accept As Solution if it solves your problem so others can more easily find the answer - -
    - - Please click the Kudos star if you would like to say thanks - -

  • HT1430 my iPhone4 will not turn on or show that is working at all, i have tried to charge it so that the screen will light up but it won't work, when plugged into the computer iTunes does not show any sign it is plugged in, what do i do?

    my iPhone4 will not turn on or show that is working at all, i have tried to charge it so that the screen will light up but it won't work, when plugged into the computer iTunes does not show any sign it is plugged in, what do i do?

    There is a hardware problem.  Whether it's worth it to you to have no working phone for 2 months until you can update vs paying for replacement/repair now is a question only you can answer.

  • HT201210 i updated my 4s yesterday, but my phone will not work at all now, and will not turn off. It has a itunes image on the screen with an arrow undernieth and what looks like the charger lead. i've had it on charge! is there anything else i can do?

    i updated my 4s yesterday, but my phone will not work at all now, and will not turn off. It has a itunes image on the screen with an arrow underneath and what looks like the charger lead. i've had it on charge! is there anything else i can do?

    Cconnect it to your computer with the latest version of iTunes installed.

  • My 4th gen iPod Touch will not turn on

    Over the last two years, I've battled with inconsistent performance from my iPod Touch 32GB 4th Gen. At some point, I think it got overheated, and I believe that's when the battery issues started. Here's an in-depth look at the various problems...
    1) The iPod will not turn on for weeks at a time. YES, I HAVE tried pressing the home button and wake button at the same time. Please do not suggest that I do that. When I plug it into either a USB port or my wall charger, the iPod will either A) not respond in 90% of cases or B) show the little charging symbol in the other 10%. If I unplug my iPod at this point, it shows the typical "Connect to charger" illustration. However, if I leave it connected to the wall, it will sit there, acting like it's charging, but never actually does. It never even gets to the Apple screen, and this often goes on for days. I have already tried "restore" mode in iTunes to no avail either.
    2) The iPod will charge (after weeks off of the charger), but only for about 25-30 minutes. Once I get it to turn on, it will only charge to about 20% usually, and then I have to remove and re-insert the USB plug to get it to charge further. I cannot use the iPod during this charging time, as it will deplete the battery and put it back in the state from number 1 for weeks. In connection to this problem, my laptop (primary charging source) now makes the sound effect of a USB device being inserted and removed fairly often, even when no iPod is connected, and when the iPod is connected, the USB ports will randomly charge (or not charge) my iPod.
    3) Even on full charge (that rare occasion), my battery life only lasts about an hour.
    I don't have a Genius bar anywhere near here, and this iPod is at least 3 years old, so it's not worth pouring a lot of money into to repair or replace. Any solutions?

    Not Charge
    - See:    
    iPod touch: Hardware troubleshooting
    iPhone and iPod touch: Charging the battery
    - Try another cable.
    - Try another charging source
    - Inspect the dock connector on the iPod for bent or missing contacts, foreign material, corroded contacts, broken, missing or cracked plastic.
    Sounds like at least a bad battery

  • Mid-2009 Macbook Pro will not turn on

    Hi Folks,
    so my mid-2009 15in Macbook Pro will not turn on. I updated the OS to Mavericks in December 2013. I'm from California, but I recently moved to the Guam/Marianas area where it is more humid and generally around 87 degrees F all day. For the past month my computer has worked fine, albeit I did notice the fan was running a little more than usual. I usually would just put it into sleep mode when I would finish using it (apparently a bad idea based off of reading other posts concerning humidity and, more importantly, heat). One day I finished using it, closed it and the next day went to open it; I could hear the fans start to work, but then it stopped. It hasn't turned on since. You press the power button and nothing happens. I tried all the troubleshooting stuff.
    So, my question is this: what do you think is the problem? Moreover, how much do you think it could cost to repair it? My experience with computers suggests to me that it's probably a dead motherboard. I'm wondering if it's worth trying to salvage this thing or if it would be prohibitively expensive. There are no Apple stores in the area to take it in to get advice unfortunately.
    Now, I just want to vent a little frustration. I have many apple products, and I've even switched my mother over to an apple computer, but now that I need some very basic support, apple doesn't provide a contact e-mail or a free chat? I think charging someone $19 for 'one time assistance' is ludicrous. I bet if I brought this into an apple store I could at least get some advice, and thus get some idea how I want to proceed with repairs or not. I suppose I'm also rather frustrated that my macbook, which I have been most happy with all these years, breaks because I go somewhere a little more humid and generally warmer? It would appear that the hardware failure is connected to the climate. This makes me skeptical about purchasing another mac if it can't handle a little humidity. (I have not spilled liquids on it, nor have used this computer while transitioning from an air-conditioned/humid location which could potentially cause condensation). I do not think I'm being unreasonable (yes I do think a $2500 computer should not fail after less than 5 years), but if you think I am unreasonable, please enlighten me.
    Thanks for any help. I really appreciate it.
    Ken

    Ken,
    the “Important Handling Information” in the little white manual that came in the box with your MacBook Pro states that its operating temperature range is from 50 °F to 95 °F (10 °C to 35 °C), and that its operating range of relative humidity is 5% to 90% (non-condensing). If your corner of the Pacific is outside of these ranges, the manual states that “Failure to follow these handling instructions could result in damage to your MacBook Pro”.
    I have no idea what problem your MacBook Pro has; since you’ve tried all of the troubleshooting stuff, you’ll need to somehow get your MacBook Pro to a qualified service facility to diagnose the problem. If the logic board does need to be replaced, it would probably cost hundreds of dollars for a replacement, and you might find that purchasing a replacement used MacBook Pro of the same model to be price-competitive with just replacing your MacBook Pro’s logic board.
    If you find Apple’s out-of-warranty policies unacceptable, then your only alternative to venting would be to purchase your next computer from a different company which has out-of-warranty policies more to your taste.

  • My iPhone 4s is stuck on a black screen that shows a USB cable connecting to iTunes. The phone will not turn on and the iTunes logo as I described only shows up when I plug the phone into the charger or my computer. I have tried the reset in restore mode

    My iPhone 4s is stuck on a black screen that shows a USB cable connecting to iTunes. The phone will not turn on and the iTunes logo as I described only shows up when I plug the phone into the charger or my computer. I have tried the reset in restore mode as well as the DFU? mode and it still will not work. I have the latest version of iTunes on my Mac. My error code was 2002. I also tried it on my laptop (windows 8.1) and none of the above worked. My error code on my laptop was 02. The phone is through Verizon and it has absolutely no damage. It was working fine up until this and I have been trying to fix it for 2 days. Please help! I am unsure of what version the phone was currently running on before this because I have another iphone that's my primary phone and have not used this one in about a month. I do not believe it was updated to IOS 7.

    Your iPhone is in recoverty mode at the moment so to possibly get it back up and running you would need to do a restore as you have been trying. Follow the steps in the article below for the specific error messages you have been receiving. If after following all steps the issue remains book an appointment at a local Apple Retail Store to have the iPhone evaluated.
    Resolve specific iTunes update and restore errors

  • My iPhone 3gs will not turn on, charge, or allow me to perform a hard reset. iTunes nor my computer recognizes it andthe screen wont light up at all. What can I do to fix this?

    I have an iPhone 3gs that is out of warranty. I purchased this phone from AT&T. Last night my phoone went completely dead (battery percentage was at 96% just moments before) and now will not turn back on. I have tried just about everything I have found on discussion boards- trying hard reset, plugging into itunes, charging for15-20 mins then holding down sleep and homebuton..... NOTHING works. This phone will not light up AT ALL. My computer wont even recognize it. Is there anything else I can do?

    Make an appointment at an Apple store if there is one nearby.

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