Question: When I install 4GB or more memory on Penryn1600SLi-110dB, I found it became unstable under Windows® Vista™ 64-bit. What should I do?(3/24/2008) Answer: Please refer to following steps to install Microsoft® Vista Hot Fix KB929777 to fix this problem.
Only install 2GB memory to the motherboard first.
Install Microsoft® Vista Hot Fix KB929777
Microsoft® Hot Fix KB929777 is available at: http://support.microsoft.com/kb/929777/en-us
After the Hot Fix installation is completed, please restart the Windows® Vista™ 64-bit system.
Shutdown the system and install 4GB memories back to the motherboard.