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My cnm touchpad 7 the screen went off unabling me

My cnm touchpad 7 the screen went off unabling me to even turn the power off now it's just black the light comes on when I plug charger in but nothing on the screen

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  • Anonymous Mar 21, 2014

    i have a cnm 10.1 touchpad.when i turn it on the screen is different shades of white then grey and that is all i get on it.what is wrong ?

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1 Answer

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  • Computers & ... Master
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Could be the back light has failed. If you shine a bright light at the screen and can see something in the background, that is what it will be.

Posted on Dec 31, 2013

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6ya6ya
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JSEhandyman
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SOURCE: My Gateway went black screen no lights what happened

Hi flady_98,

You don't specify model, so what follows is fairly generic. If you can provide more details, perhaps I can too.

If it's booting (start-up chimes/sounds), then I'd suspect the display (either the back-light, or perhaps the inverter/controller circuit board). Backlights require (in my experience) replacement of the display, likely more than the value of the laptop if it was a refurb (~$500 and up in my exp.). Inverter boards are less spendy, but you have to get the right one, and get it installed (how tech-savvy are you?)

If it's not booting at all, (don't hear the hard drive spooling up, etc), then we start looking at power supply issues and go from there. But I really need more details.

If I can be of further assistance, let me know, and include as much detail as possible (you should be able to load digital pictures onto this space using the toolbar above).

If this solves the issue, please rate it accordingly.

Thanks in-advance for using Fixya.com,

Jon

Posted on Jan 22, 2009

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SOURCE: screen stays black on startup of toshiba satellite L300

have you tried either switching between external and internal monitor usally Fn + F5 on toshiba or try plugging a monitor into the back and see if it displays.
if you get a display on the external monitor then its probably a screen or inverter fault if you donot get a display to an external screen then it is likley t be the graphics on the board itself.
hope this helps

Posted on Feb 22, 2009

  • 2567 Answers

SOURCE: Was using my Hp Pavilion dv7 laptop, suddenly

1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable.
2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced.
3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.)
4. Next, remove the keyboard & the LCD screen.
5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard.
6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them.
7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack.
8. When you are done, re-assemble back the laptop.

Posted on Oct 10, 2010

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SOURCE: Won't Turn on, not even when connected to mains - LED lights on but no HDD drive light

The HDD can go at anytime without warning, does the Asus logo come up on the screen?

Posted on Apr 08, 2012

redy2rumbl
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SOURCE: I keep getting a beep when I turn the computer on....black screen...and nothing

If the computer is out of warranty, you dont have anything to loose. Have the northbridge and video chips re-flowed. You can do this using a heat gun, but
you have to be very careful not to destroy your board. This is a similar problem that XBOX360 owners were having with the red ring of death. These boards run very hot and over time and many cycles of heating up and cooling off the
chipsets separate from the mainboard and your computer becomes useless.
I dont have a board in front right now but if my memory serves me right place
the board in front of you so the hard drive connections are on the left side of
the board and the CPU socket is facing up. the 2 chips you want to work on
are just to the right of the CPU socket and just above the CPU socket. Be
sure to remove the CPU before you put any heat on these chips. Use circular
motions with the heat gun on HIGH. You may need to get some flux to put around each chip before doing this, but in my case I didnt have to. There was plenty there already. Computer worked for about 6-7 months after my fix and then needed the same repair again. If you want to see this done there are a lot of videos on the XBOX360 being done on youtube so to kinda give you an idea of how to do it. Might not be worth the trouble and you might be better off parting out the machine and just buy another one. Its all up to you, I hope this helps
I just bought a new system

Posted on Aug 24, 2012

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