black screen at startup and even on HDMI

My hp pavilion dv7 gives me a black screen at startup and even if it is connected to my HDTV via HDMI. have tried several methods but still not working (the battery grip and long pressing the power button and then using the AC adapter to turn on). Can someone help me solve the problem please.

Yances,

Welcome to the forum.

Have a look here:

Provides the steps necessary to test the memory and the hard drive and restore the operating system if the laptop does not start and no error message is displayed.

HP Notebook PC - troubleshooting black screen displays with no error message during startup or boot

The next document implies that the system provides an Error Message:

HP Notebook PC - troubleshooting on a black screen error Messages that may occur during Startup or start-up

Tags: Notebooks

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