Can anybody help me change the settings in my BIOS to get all 8Gb of DDR2 online? This should not be this difficult, but it sounds normal on these forums. I mean, if I can't figure this out, normal newbs don't stand a chance, I've built 5 desktop computers and never had to worry about changing the voltage on my RAM.
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Uh, Daniel, most of us regulars have been around a while. We try to be obvious when we ask silly questions.
Gigabyte motherboards can have problems running 4 sticks, even if they are all the same. Your problem shouldn't be too bad because they are all the same brand.
Common memory BIOS beeps:
Series of long beeps - serious memory problem, like none detected.
Series of short beeps - nearly as serious. At the least, memory is detected, but it 's not working very well.
Do all the factory specs of the different RAM modules match?
Test each stick separately with memtest86+ to make sure each is working.
Set the memory timing to that of the slower sticks.
Remove any overclock until you get your system working.
Make sure you are not overclocking your memory. Change the System Memory Multiplier from Auto to 2.0. You will see your memory clock freq change to 533 MHz.
Note: Except for increasing instability, overclocking memory has little effect on a Core2 system: http://www.tomshardware.com/forum/251715-29-ratio-myth
Note 2: Because of Note 1, DDR2-1066 RAM is largely wasted on a Core2 CPU with a 266 MHz FSB freq.
Increase the RAM voltage up to a maximum of 2.2 volts.