Password admin or power on password for hp dv7-4190us

My hp Pavilion dv7-4190us won't start.  He asked me to administrative passsword or power on password which I don't have.  After a few attempts, I received the following message is displayed:

System to disable the number: 84148488

Help!

George W

Try to GW.

31820408

REO

I must inform you that these services are not endorsed by HP, and that HP is not responsible for any damages that may occur to your system using these services. Please be aware that you do so at your own risk.

Tags: Notebooks

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