My pavilion dv7 doesn't start up

My pavilion dv7 Notebook PC doesn't start up. I removed battery and power and I reset hard. I started it up. Thats happened many times. Each time i shut it off I need to reset hard to start it up again. What is the problem and what is the solution for it?
Is out of warranty. Is there any HP repair center I can apply for repair?
Product Number: XE274EA#ABU

Hello @danaos947 ,
Welcome to the HP Forums!
I understand you're having issues starting up your dv7 notebook and have to do a hard reset to boot each time.
If you're only looking for service you can contact the HP Phone Support line. You can schedule a repair over the phone. You can contact HP Technical Support at 1-800-474-6836 in North America. For all other regions click here.
Can you tell me if you have the same issue when only using the AC adapter and no battery? 
I would also suggest a startup repair. You can do this in the HP Recovery Manager by tapping F11 while the notebook boots up.
You can also try a system restore to before the issue started while in the Recovery manager if the repair does not work.
When the notebook doesn't boot are there any LED lights or sounds (Fan, HDD, etc...)? If not, it's power related and could be the battery motherboard or adapter depending on the source you're using. If there are sounds and appears to boot it might be the GPU or display. Try an external monitor in this case to rule out the display.
Here are some other documents you can go through: 
Computer Does Not Start and the LEDs Blink or the Computer Beeps.
Troubleshooting Black Screen Displays with No Error Messages During Startup or Boot.
Testing for Hardware Failures (Windows 7, Vista) or Testing for Hardware Failures (Windows 8).
Let me know if this helps!
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Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
I work on behalf of HP.

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    Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
    Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
    The Great Deku Tree
    I work on behalf of HP.

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    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

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    ****Click the White thumb to say thanks****
    ****Please mark Accept As Solution if it solves your problem****
    ****I don't work for HP****
    Microsoft MVP - Windows Experience

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    ****Click the White thumb to say thanks****
    ****Please mark Accept As Solution if it solves your problem****
    ****I don't work for HP****
    Microsoft MVP - Windows Experience

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    This question was solved.
    View Solution.

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