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Video powered down & back up; get black screen

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Check Connections, RAM and Power supply. You don't say if the fans are running or if any lights are on in the tower, so I can't be more specific.

Posted on Jul 21, 2013

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Posted on Jan 02, 2017

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Samsung UN55HU7200FXZA. Black screen. When turn on,Verticals white & black lines, and after 2 seconds goes black (no video).


If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

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I have a TH-PX60U that has a black line going down the front of the screen. It goes from black, then back to regular color. The black line keeps coming back. How can I get rid of the black line??


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD & Plasma TV screen are given with illustrations. You can get an idea about the fault to an extent.

Jan 08, 2015 | Televison & Video

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Dell vostro 200 powers on fan, but have a black screen and cannot run is safe mode or boot up


It sounds like the Video card has suffered a catastrophic failure. Remove & go to a parts store or order from someone like Frys.com or ebay or Tigerdirect.com If you don't know how to use someones computer to look up "How to change the Video Card on a Desktop PC" & you will find a video of how to.

May 15, 2014 | Dell Vostro 200 PC Desktop

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Power button not working


You didn't say Windows what? makes a big difference you gotta know. Have you tried a safe mode start up by tapping F8 a few times key right after Bios screen blanks & before Win. screen appears. Once in the boot menu choose safe mode. Let it boot then try decreasing the video settings & restart. if that"s not the fix restart in SM & uninstall video driver. It should reinstall a working driver on next start up.

Jul 13, 2013 | MSI Computers & Internet

1 Answer

Powering up but black screen


backlight on screen doesnt work

Apr 05, 2012 | ASUS Computers & Internet

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Ok when I turn on my laptop it boots up and starts working but after I sign in my screen goes blank (black) so I hooked up monitor and I can see the video card is working.. Now the funny thing is if I let...


  1. Check your power cord & adapter.
  2. If its working then check the battery, reseat the battery & check.
  3. If available then check with another battery
  4. If no, then remove the battery & switch on the PC in AC mode.
  5. Check if battery charging indication or AC power on indication is glowing. if not then need to change ur motherboard.
  6. If indication is OK, but could not power ON then check ur RAM for any loose connection or dust. clean & reinstall.

Aug 20, 2010 | Sony VAIO VGN-NS140E/S Notebook PC

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My Imac crashes. 10.6.4, 2 GB ram, 2 GHz core duo. I've started with a clean install and disabled (one by one) all start up apps. Out of the clear blue, the screen will go black & I have to turn it...


When you say "screen goes black," does the computer power down, or is it still operating? Does the sleep light come on? Does it respond to the keyboard and mouse? (Example: press the power button momentarily, wait a few seconds for the "Do you really want to shut down" message to appear, even though you can't see it, then hit the return key to answer "OK," and see if it shuts down.) Does the screen go black or come out of black if you tap the computer?
While your computer is working, go to System Preferences / Desktop & Screen Saver, the Screen Saver tab, click Hot Corners, and set a corner of your screen to Put Display to Sleep. Then next time your screen goes black, mouse your way into that corner, pause a few seconds, then mouse back out and see if your screen returns.

Jul 10, 2010 | Apple iMac 17" Desktop

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Black Screen after installing new NVidia 9400GT


Put the old card back in, remove the old drivers and restart it in VGA mode.
You don't say what operating system you use, but XP & Vista you should be able to hit F8 before the windows splash screen to select VGA mode or Safe Mode.
Once you do that you should be able to put the new card in and start it in standard VGA mode then load the new drivers.

May 25, 2010 | SPARKLE Computer Sparkle GeForce 8500 GT /...

1 Answer

After switching on my PC (Windows 7), the screen


Well it'd be nice to know the make/model, I can atleast assume it's an hp because of where this is posted. Some additional details that lead up to you wanting to restore to a prior date would help too. Also,if it goes black as you say,how is it that you could get into system restore? Or was that a typo? Anyway, here's my shot in the dark, see if there's power anywhere on the pc when it goes black,ie. hard drive spinning,fans,diagnostic lights,sound,etc. If it does, then if it has onboard video & you use a graphics card, remove the graphics card & plug the monitor into the onboard port. If this fixes the problem,you need a new graphics card. If it only has onboard video,then open the computer & see if there's a graphics card slot & install one if you have one that is the proper slot type. Don't worry,can't put the wrong kind in,they all have different connectors. If doing that fixes the problem, the motherboard is going bad & the video chip was the first to go. Now all this is assuming it's a desktop,laptops have built in video only & most have a port on back for an external monitor,which you can plug into to see if the same problem happens,if it does,the motherboard is bad. Post back with the additional info if this didn't help.

May 13, 2010 | Computers & Internet

1 Answer

Anytime Windows Media Player starts to display a video of any type, the screen will blink black 2 or 3 times and then the screen goes completely black and I have to hold in the power button to restart the...


It sounds like you have a problem with your video card & it may need to be replaced but try updating the drivers before you do anyhing else. You could even try a clean install of your operating system as this will be chaper than buying a new video card. Sometimes things just stop working & I'm afraid the most likely thing is that your video card has died.

Sep 07, 2009 | Microsoft Windows Media Player

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