Laptop goes black but computer is working with extra monitor

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Hi,

What Is Wrong With a Computer When the Screen Goes Black But the Lights & Computer Stay On?

My Laptop, Compaq Evo N610C ,turn on but screen remain black.

I connect laptop from back port with extra monitor and laptop is working with extra monitor but still laptop screen is black.i am not pc expert.

It happen 6 months ago but screen came back and was working till last week.

Right now I am using extra monitor.I updated video driver but did not wotk.Is any wire broken ??

If so how can I open that part of Laptop to fix screen problems??

Please help.

Thanks!

I didn't find the right solution from the Internet.

References www.bleepingcomputer.com/forums/t/512319/laptop-goes-black-but-computer-is-working-with-extra-monitor/

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