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rtessenear

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  1. I hope you guys can give me a little advice. I recently put together this board with an i7 3770K, Patriot Viper Extreme Series (PXD38G2400C11K) set to 11-11-11-30. I followed the OC guide (from this site) as a base; however I did not notice that the LN2 switch was set to Low freq (on my board). This set the multiplier to 16 and trust me it messed me up for about an hr until I realized what the issue was. The odd thing is once I set the LN2 switch to normal and posted into the bios I was able to see the correct CPU speed CPU freq and so on. I then set the XMP profile for the mem and configured the rest of the bios (raid and so on). no overclock at this point. Then I saved the settings rebooted and I got a post code 64 and then nothing, the system would not post. If I set the LN2 switch to low freq it would post. I have swapped memory, CPU's and done everything I could think of to resolve this issue. I can get the system to post with the LN2 switch set to Normal if I hit the reset button a few times, it will post; however that is not right. I have tried all the bios's from Gigabytes site as well. F5F, F5J and F5 give me the most consistent results. The strange thing is once I can post the system is very stable and can run Prime95 all day long. I can also do a very stable 4.8 Ghz overclock as well (once I get the system to post). Strange thing is I don't get the post 64 code at all with LN2 set to low freq. The system works very well in that configuration. Just runs under clocked. Any advice would be appreciated. I have the 2666 Corsair Platinum Mem on the way as well and will try that. I may have a bad motherboard. All the components currently used came out of a very stable 1366 i7 configuration, this build was just an upgrade to new cpu and chipset. CPU=i7 3770K Mem=PXD38G2400C11K Cooling=custom built TEC cooling system (CPU stays at 8c) Power Supply= 1300 ABS VGA= 2X Hydro Copper 680's VGA Power Supply= 650watt Quick OC bios settings. Mult 48 Bclk 100 Mem 2400 Vcore 1.35 Just to clarify, this issue happens with no over clock. As soon as I flash the bios, reboot then tell the system to load optimized defaults the system hangs on Post code 64. After a few power resets it will post. then I can get into the bios and configure the rest of the settings. I have better luck (less post code 64 hangs) if I under clock the mem; however like I said with nothing configured in the bios I can still get this issue. I have also used Dom Gt 2000 men from my old 1366 build as a test (only two sticks), same issue. Sounds like the 51 post code error you guys were getting. Except that is a mem code and code 64 is cpu DXE init
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