Hey Salt..no sweat. This is what you need to do.
ATI Mobility cards are difficult to install. BUT there is a solution. I have a ATI Mobility 4850 and what i did was the following.
First you will need to download the RadeonHD kext from Insanelymac.com. Its also referred to as Dong's RadeonHD kext. a Kext is a driver. Secondly, you will need to compile a DSDT file for your laptop. Again, go to insanelymac.com and download DSDT Editor.
Boot up with iBoot and get to the Mac Desktop.
With DSDT editor you will be able to download your DSDT from your computer. A DSDT file is basically a software adaptation for your laptop Bios. Once you have extracted your DSDT file you will see that there will be errors. you need to click on Fix Errors. Hopefully you will have no errors showing once you are done with fix errors. Then you need to COMPILE this file and save it as DSDT.AML
Place your DSDT.aml on the Mac Desktop. Place the RadeonHD.kext in the /System/Library/Extensions folder. Also you will place in the trash the ATI_Init.kext and the ATIx1000.kext
Now, you will run Multibeast and check off the following selections:
USER DSDT
SYSTEM Utilities
in the Advanced Tab you will select
32 bit Apple Load Screen (do not select the one that says Graphics Enabler=No)
Now, you cross your fingers and you boot up. When you get to the chameleon screen press a button quickly before the bar runs out. Now type -v and hit enter. This -v command will allow you to see what is loading on the comp. If your comp freezes you can take a picture of the screen and send that in here and we can see what it is that is the probs.
Now if you can't get the DSDT file to compile, you can checkoff the EASYBEAST setting instead of the USERDSDT setting. Still select the other selections I advised.
if it boots up successfully and you cant use your laptop keyboard and/or trackpad, connect a USB keyboard and mouse to your laptop and load up Multibeast again and check the following settings:
- System Ultilities
under the Advanced settings select
- USB Rollback
-Voodoo PS2 Drivers
If you don't get audio you can try the Audio driver Voodoo 2.7.2, they usually work well.
Outside of that, maybe Macman or someone else can provide help.
Hildi
