Do EC reset. If no help, do fresh install. Always do EC reset after fresh install.
Follow guide:
http://www.tonymacx86.com/hp-proboo...-install-yosemite-hp-laptops-clover-uefi.html
Since you have Yosemite installed, you should be posting in the Yosemite forum. This forum is for Mavericks.
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For diagnosis...
Download patchmatic:
https://bitbucket.org/RehabMan/os-x-maciasl-patchmatic/downloads/RehabMan-patchmatic-2015-0107.zip
Extract the 'patchmatic' binary from the ZIP. Copy it to /usr/bin, such that you have the binary at /usr/bin/patchmatic.
In terminal,
Code:
if [ -d ~/Downloads/RehabMan ]; then rm -R ~/Downloads/RehabMan; fi
mkdir ~/Downloads/RehabMan
cd ~/Downloads/RehabMan
patchmatic -extract
Note: It is easier if you use copy/paste instead of typing the commands manually.
Post contents of Downloads/RehabMan directory (as ZIP).
Also, post ioreg:
http://www.tonymacx86.com/audio/58368-guide-how-make-copy-ioreg.html. Please, use the IORegistryExplorer v2.1 attached to the post! DO NOT reply with an ioreg from any other version of IORegistryExplorer.app.
And output from:
Code:
kextstat|grep -y acpiplat
kextstat|grep -y appleintelcpu
kextstat|grep -y applelpc
Also, post EFI/Clover folder.