ASRock Z77 Pro4 manual 209, Windows 7 64-bit

c. Set “Startup type” to “Disable” then Click “OK”.

C. Reboot your system.

D. After reboot, please start to install motherboard drivers and utilities.

Windows® 7 64-bit:

A. Please request the hotfix KB2505454 through this link:

http://support.microsoft.com/kb/2505454/

B. After installing Windows® 7 64-bit, install the hotfix kb2505454. (This may take a long time; >30 mins.)

C. Reboot your system. (It may take about 5 minutes to reboot.) 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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ASRock Z77 Pro4 Motherboard