ASROCK Z77 Pro4 User Manual page 73

c. Set "Startup type" to "Disable" then Click "OK".
C. Reboot your system.
D. After reboot, please start to install motherboard drivers and utilities.
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Windows 7 64-bit:
A. Please request the hotfix KB2505454 through this link:
http://support.microsoft.com/kb/2505454/
B. After installing Windows
(This may take a long time; >30 mins.)
C. Reboot your system. (It may take about 5 minutes to reboot.)
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D. Windows will install this hotfix then reboot by itself.
E. Please start to install motherboard drivers and utilities.
6. Finish.
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7 64-bit, install the hotfix kb2505454.
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