What OS are you seeing the issue on? You list two here, :
"OS: Win7 x64 / Win2008R2"
OK,, So are you refering to Windows 2008 Server R2? Do you have the OS's set up as multiple OS's on one hard drive or do you swap out drives?
I swap out drives for each OS. Replace HD2000 with AMD5450, it's all right.
For Windows Server 2008R2, only the inbox drivers on the OS install CD are supported. So I'm curious how you were able to install the Intel HD Graphics drivers on this OS.
For the Windows 7 installation, when you say it "Won't wake up",, do you mean the system does not resume from sleep or the monitor does not turn back on when the computer starts back up?
When I press the spacebar, the keyboard lights lit for 2 seconds, then turn off. Computer's power is restored. But the monitor does not turn back on and OS has no response. I had to reset the computer.
Do you have the latest System BIOS (0508) for your Z77 available from the ASUS support site?
Yes. I disabled all external card, include NIC/WiFi/USB3... Only 3 drivers installed: Intel Chipset, RST and HD2000 drivers. Apply newest OS patches.
