naman368,
I looked at your EFI folder. My comments are based on the included documents in
OpenCore-0.9.2-RELEASE and OpenCore's Install Guide for the Skylake-based computer's config.plist. I have only listed any inconsistencies I have seen. Keep in mind that I have no HP motherboard as a reference, only my Skylake EFI folder for my "Mini-ITX 2" computer when it was a Hackintosh, plus the online OpenCore guide..
EFI/OC
1. Your two files in your ACPI folder should be replaced from the OpenCore-0.9.2-RELEASE/Docs/ACPISamples/Binaries folder.