Black screen after installing Windows 7

Discussion in 'iMac' started by Snake Doctor, Jun 6, 2010.

  1. Snake Doctor macrumors newbie

    Jun 6, 2010
    Im trying to install Windows 7 using bootcamp on my iMac. Everything works just fine until after the main part of install is done, it then restarts and goes to a black screen and does not move from that black screen.

    I am aware of the issues that I have described above and how to fix them. So I followed the instructions to fix on apples support but unfortunately, I only had the updated driver fix on my USB drive so it still doesnt work.

    What I think I need to do is get back into my mac boot. Then I can either just delete the partition, or I can get all the correct bootcamp drivers. The normal way of holding down the Alt key on startup doesnt seem to be working, is there any other way I can get back onto my Mac boot?

    Thanks in advance
    Edit: Just realised this is in the wrong forum, sorry.
  2. slicecom macrumors 68020

    Aug 29, 2003
    Toronto, Canada
    You need to hook up an external display to see what's going on in Windows and install the bootcamp drivers. Holding option should still work at boot.. try pressing it a few times right after the chime.
  3. Snake Doctor thread starter macrumors newbie

    Jun 6, 2010
    Well I got it to boot back into mac, I then started again. I installed Vista this time in an attempt to use the Win 7 upgrade utility provided by apple. Unforunatley I cant do that as I am going from 32bit vista to 64bit win7. I can access my windows.old through repair my system option in win7 install. I select the drivers but it refuses to let me install them as it requires a "Setup File".

    There isnt a way to connect to external display without a mini-dvi is there? In which case I dont have one of those so I guess I'll have to go and get one.
  4. TMRaven macrumors 68020


    Nov 5, 2009
  5. Pachang macrumors regular

    Dec 17, 2009
    Actual Solution

    Had this problem yesterday. Fixed it easily. No need for an SD card

    1) start afresh with a new windows 7 installation
    2) Once it gets to the bit where it goes black restart and start from windows 7 installation cd
    3) Don't reinstall - go to the bit where it says "repair your computer" or something like that
    4) Keep clicking suff until you get to the bit where it lets you go to command prompt
    5) From here you have to delete a file called ATIKMDAG.SYS. It should be C:\WINDOWS\SYSTEM32\DRIVERS\ATIKMDAG.SYS

    type cd [directory name] - to change directories
    type dir - to display everything in the current directory
    del [filename] - to delete a file.

    keep cding to find it then delete it!

    -Restart your computer and it should boot into windows 7 fine. Then grab your osx cd and install the drivers
  6. nj-mac-user macrumors 6502


    Jun 1, 2009
    I used the Apple KB as well, but I used a usb stick instead of an SD card. I basically had to reinstall Win7 again and just left the usb stick inserted and it automatically accessed the usb and loaded the correct drivers during the OS install and walahhh... no longer a black screen issue and I was able to proceed with the final steps of the installation.

Share This Page