I've had a look at your OC folder and made some changes, that I think will help your system.
Your current OC folder contains the following:
The revised OC folder contains the following:
As you can see there are a few obvious changes in the ACPI, Drivers and Kexts folders. These changes have been carried through to the config.plist.
I have also included a few other changes in the config.plist, including but not restricted to the following:
- cleaning up and removing some unnecessary patches,
- enabling the entries required for HP systems,
- enabling XhciPortLimit Quirk and adding USBInjectAll.kext so you can map the Usb ports without any issues, and
- changing a few entries that do not follow the OC Haswell guide.
You need to add your Serial Number to the revised config.plist and save the file.
I would recommend you then add the OC folder to a copy of your current EFI folder (overwriting the existing OC folder). The revised EFI folder should then be copied to the EFI partition, on a spare USB pen drive.
Boot the HP system from the USB drive's EFI partition, not your macOS drive.
When you first get to the OC boot screen press the spacebar to unhide the Auxiliary tools/drivers and use the ResetNvramEntry.efi to clear any old Nvram entries before you boot with the new OC folder.
Let us know how this revised OC folder behaves.