Overclock passes torture test but fails on boot

Peaks

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My specs are:

MoBo : GA-EP45-UD3P

CPU : Q6600 @ 3.0 GHz
FSB : 333
Multiplier : x9
Vcore : 1.26v

RAM : OCZ 4GB (2x2GB) DDR"2 PC2 - 8500C5 1066MHz

FSB : DRAM = 5:8

Timings : 5-5-5-15 @ 2.1v

When I run a torture test using Prime95, it passes no problem, but then seems to fail the next time I boot?
Does anyone know any reason for this. I am not really familiar with the BIOS i am using. For example I don't know what the memory multiplier does and what the MCH Frequency Latch is?

Any help would be greatly appreciated!!
 

Peaks

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I have done a lot of research into this and it seems the problem is more with EP35-DS3 boards rather than mine.

Some suggestions were to disable Latency USB support, and to underclock my RAM to 800, none of which worked. When booting this morning (after computer had been off ofr about 9 hours) it booted to the second BIOS. When entering the original BIOS set up it said there was a boot failure due to overclocking values, but nothing was reset. I am now running at the specs given above no problem, its just on boot.

This is not a difficult overclock for my processor or this motherboard, so I am 100% sure it is nothing to do with unstable values. Is there any other way to solve this or will I have to RMA the board?
 

Peaks

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i think i have sorted the porblem. thanks for your suggestions RJR.

I basically disabled the Latency USB Support, and set the boot strap to 333MHz. This boots first time now, altho thatere are two boots if the power is turned off to the power supply, however apprently this is a normal thing set up by intel. This is because the boot strap is forgotten when power is off to PSU, it then has to reset it when it boots next time, which inturn requires another boot to save the cahnages, hence the double boot after power off to PSU.
 

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