HP Compaq laptop not opening right

Compaq Hp compaq 15.6" presario cq56-115...
November 3, 2015 at 08:58:03
Specs: Windows 10, Amd v-140/4gb
Hello everybody!! I have a serious problem with my laptop... As i turned it on today the screen stayed black and the keyboard keys weren't responding but i can hear it working just fine... Please if you know and if you can help me.Thank you!

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November 3, 2015 at 10:08:11
Do you really know that the keyboard isn't working?
If the screen is black, it would be difficult to determine
that there is also a problem with the keyboard.

If it is just the screen, it is most likely a broken ribbon cable
in the hinge. Sometimes you can raise the screen just enough
to turn the laptop on, and the broken cable ends momentarily
touch, so you can tell that that is in fact the problem. The
cable should be fairly easy to replace. You can probably find
a new one for your specific laptop model on the web. I've seen
generic instructions on the web for replacing video ribbon cables.
Or any computer repair shop can replace it for a fee in addition
to the cost of the part.

Other possibilities are that the cable just came loose, or that the
light source died.

-- Jeff, in Minneapolis

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November 3, 2015 at 19:16:37
When you say you can 'hear it working' does that mean you hear the windows startup sounds or does it mean you just hear fans and drives spin up? If the former then yeah it's probably a screen or screen connection problem. If the latter it could be just about anything since only fans and drives spinning up does not mean the motherboard is working.

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