GA-EX58-UD5 and G.Skill DDR3-1600 6GB issue?

Anyone with the GA-EX58-UD5 and 6GB G.Skill DDR3-1600, please read and respond

When I keep the BIOS at absolute default settings, which sets the RAM to 1066mhz, the computer boots up fine. But when I change it to Profile1 in the XMP settings which brings it to 1600 with the correct timings and voltage, I save it to the BIOS and let it boot up. When I turn the computer off and later turn it back on, it will turn on and shut off for a few seconds just before POST, then turn on again and boot. This is hard on the PSU and other components. I can manually set the RAM settings and it will do the same thing. I have updated the BIOS from F2 to F3 to F4, reset it a dozen times, quad-checked the settings and voltage for RAM and CPU, and everything is set to Auto except for the RAM. I have removed every unecessary part and all but 2GB RAM, switched the RAM around, reinserted RAM, re-seated the video card at least 5 times, and monitored temperatures. The CPU sits idle at 35C and everything else is virtually cool to the touch.

One thing I noticed is that after POST, the LEDs on the motherboard, which show what level of overclock or voltage you are at, has the CPU at the yellow level 2 voltage when on the Auto setting. The northbridge (PCI-E) LED is green which indicates a level 1 voltage increase. The RAM LEDs are not on at all which indicates no change in voltage or speed from defaults. So to me the BIOS is upping the PCI-E and CPU voltage even though they are set to Auto and I'm not overclocking. I do have it set to automatically increase the CPU multiplier so it sits at 21x even at idle, according to CPU-Z, but the computer still reboots when that feature is shut off. This is a Core i7 920 with a multiplier cap of 20x. I didn't realize that the BIOS can incrase the multiplier past the cap - is this a problem? I have the function where it will increase voltage and core speed according to load shut OFF. But even if it were ON, I'd expect those settings to sit at default at idle and they aren't.

Just a couple weeks ago I sent in my PSU to be repaired due to what I though was a faulty inductor. After recieving the PSU the high-pitched noise still kept going inside the PSU. It has since stopped, so maybe something finally blew. I think there is a short in the motherboard somewhere or one of the capacitors or chokes are dead or dying.

Anyone with a similar setup (EX58-UD5 and 6GB G.Skill DDR3-1600) have automatic reboots prior to POST when set at the RAM's profile setting?





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