I used MacPwn with Clover but it`s the same problem, show the Apple logo with a progress bar, but the progress bar stops at middle way, later,some lines of colors displayed on the entire screen,
later displayed a grey display with the colourful circle.... and never start the installer... I used -f , -x USBBusFix=Yes, GraphicsEnabler=On and Of, but not work.
My laptop is a HP Probook 4430s, with Core i3 Second Generation, Graphics Intel HD 3000, with MBR. Thanks for your help.