Which Display Driver -- iMac 27", Bootcamp and Win 7

Discussion in 'Windows, Linux & Others on the Mac' started by Velin, Dec 15, 2009.

  1. Velin macrumors 65816


    Jul 23, 2008
    Hearst Castle
    After some troubleshooting, I finally was able to complete a Windows 7 32-bit bootcamp installation by deleting the NV and ATI Windows display drivers. After that, I ran the bootcamp driver update from the Snow Leopard disc.

    The problem: the display looks like crap. The max resolution Windows Control Panel allows me to go to is something like 1900 x 1400, yet the monitor is capable of far higher resolution.

    I tried installing a package of ATI's Windows 7 drivers, but there was no improvement. Windows device manager was no help.

    This iMac has an ATI Radeon HD 4670. Can someone advise how to get Windows 7 and this ATI card to properly render the native resolution? Any specific instructions are appreciated. PS this kind of time-wasting nonsense is precisely the reason I left Windows and use Mac and OSX exclusively. But I now need Windows via bootcamp for one particular application. Hate Windows. Hate it.
  2. iMatthew macrumors member


    Dec 3, 2009
    I also have the 27" base with the 4670 and I did the same thing as you trying to get Windows 7 installed - deleted the ATI display driver and finally got Win7 booted up past the final stage. I installed the bootcamp drivers and ran the update which only found a bluetooth update. Then I went to ATI's website and download the latest catalyst drivers for Windows 7 64bit - rebooted and had the correct native display. So you might want to remove/uninstall any video drivers you have and check the drivers that you are downloading and make sure they are correct.

    I have a question for you - if you only need Windows for one application then why not use VMware Fusion? I use VMware Fusion 95% of the time (it rocks)for all my Windows neeeds and only use Bootcamp to mess around every now and then. There is a 30 day trial so its worth a try.

  3. maflynn Moderator


    Staff Member

    May 3, 2009
    Apple provides 64bit drivers on your snow leopard install disk. Just navigate to the drivers and manually install.
  4. Zonyc macrumors member

    Aug 18, 2008
    I'm having a similar issue as well. I've tried using the ati catalyst drivers for windows 7 but I just boot up a black screen. The only fix is to boot into safe mode and uninstall the drivers but then I'm back to the crappy low resolution desktop. Anyone tackle this problem yet?
  5. Zonyc macrumors member

    Aug 18, 2008
    Ok well shortly after my last post I figured it out!

    What I did was boot windows 7 in safe mode (f8). Then I went to device manager and uninstalled the VGA adapter (radeon 4850), then restarted normally. Once I restarted, the display came back and Windows installed a VGA driver. At this point it asks to restart, but I declined and went into Windows update. I downloaded the 4850 driver which was under "important" in addition to the 4850 driver in "optional". After a restart my resolution issue was solved and it is now running at the full 2560 x 1440.

    Hopefully Apple will issue a patch so that we don't have to jump through hoops just to get our TF2 fix :)

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