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Hp Laptop Monitor Screen Problem


A couple of days ago, my screen completely blacked out. We called tech support who said it was a back light problem (the computer still started up and if you shone a flashlight on the screen you could see the desktop). The next day it started right up and i could use it for a few hours. Then it blacked out again. I called hp again and they said they would send us a shipping box for warranty work. While waiting for the box, i've been plugging into another computer monitor to do my work, which works fine; however, occasionally, after plugging into another monitor i am able to disconnect my laptop from the other monitor and use for a few hours. But the second i close the laptop, the screen goes black and i need to hook into the monitor again. Any ideas?

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