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atikmdag Stopped Responding – Step 1: Download and install the latest ati graphic driver.
atikmdag Stopped Responding – Step 2: Then go to C:\Windows\System32\Drivers and rename atikmdag.sys to atikmdag.sys.old.
atikmdag Stopped Responding – Step 3: Go to ati directory (usually in C:\ATI) and find the file atikmdag.sy_.
atikmdag Stopped Responding – Step 4: Copy the file to your Desktop directory.
atikmdag Stopped Responding – Step 5: Open cmd.exe by going to Start -> type cmd in the search box and hit enter.
atikmdag Stopped Responding – Step 6: Change the directory to Desktop by typing chdir Desktop.
atikmdag Stopped Responding – Step 7: Then, type EXPAND.EXE atikmdag.sy_ atikmdag.sys. Or,
expand -r atikmdag.sy_ atikmdag.sys
atikmdag Stopped Responding – Step 8: When the expansion is complete, copy the new atikmdag.sys from your Desktop to C:\Windows\System32\Drivers
atikmdag Stopped Responding – Step 9: Restart your computer and the problem should be resolved.