Hi all,
i cant get my gfx card to work. i tried installer and manualy,none works.
can someone please suggest something to fix this?

conf:
c2d e7200
ga-ep45-ds3l
sapphire hd 3850 pci-e 512 mb
2gb supertalent ram

everithing works great except gfx card!

Did you try this?

1. Get Natit from here
2. Extract the archive and copy Natit.kext to /System/Library/Extensions
3. Locate ATIRadeonX2000.kext in /System/Library/Extensions, Open /System/Library/Extensions/ATIRadeonX2000.kext/Contents/Info.plist with the editor of your choice and add the PCI ID of your card (if it is not already in there). Save.
4. Open Terminal (if you haven't already done so) and type:

cd /System/Library/Extensions
sudo chown -R root:wheel *
sudo chmod -R 755 *
sudo rm /System/Library/Extensions.mkext
sudo rm /System/Library/Extensions/Caches/com.apple.kext.info

5. You are done.

Check this site too

yes,i did try that 3 TIMES to make sure that i did not make a mistake,but did not work..