I've been struggling for days.
I've got a 4530s, on which I've upgraded to a 1920x1080 display. I'm trying to do a clean install of Yosemite but whenever I boot from the USB, I get the apple and progress bar for a while, then just a black screen. I admit, I haven't read every post in this or the Mavericks thread but I've tried what I can find. I'm using the HD3000 with 1600x900+ config.plist. I've tried inject Intel graphics on and off. I've added Rehabman's mini-dsdt.aml and dual link to the Clover partition of the USB. I've rebuilt the install partition of the USB multiple times. There's activity on the USB stick (the light is flashing), but no display.
I also tried Mavericks but had the same result (after the grey apple screen, just black).
Any ideas?