Connect USB keyboard and test,
Follow the steps given in my above post, try going to BIOS if you can & do the tests and BIOS default reset,
If it's not responding, Contact HP in your region:
http://www8.hp.com/us/en/contact-hp/ww-contact-us.html
Follow the steps given in my above post, try going to BIOS if you can & do the tests and BIOS default reset,
If it's not responding, Contact HP in your region:
http://www8.hp.com/us/en/contact-hp/ww-contact-us.html