System will only boot with 1 stick of RAM.

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27 Oct 2005
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Brighton, UK
SOLVED!!!

Started building a Mini ITX system for LAN/Gaming.

Ordered myself an Asus P8Z77-I Deluxe motherboard but had troubles getting it to post. Assumed it was the motherboard after a fair amount of testing.

After RMAing it back to OCUK and it coming back as posting fine I was left slightly stumped.

I re-assembled with only CPU, RAM and PSU. Still no post but I did notice the DRAM light illuminated so I started reseating and repositioning RAM sticks.

Managed to get it to post with 1 stick of ram! Awesome. But it will only post with 1 stick in slot B. 1 in slot A or both in just leaves an illuminated DRAM light and no post. Tried both sticks from 2 different brands and got the same result.

Spoke to OCUK but unfortunately they couldn't remember if it was tested with 1 or 2 sticks.

I know the CPU is a main part of the memory controlling so could it be down to that or is it more likely a faulty board?
 
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Not yet but my processor is supported by the current revision.

Haven't done a bios update since I had a k8-upgrade AMD and it didn't go we'll so I'm reluctant.

Could be worth a try though.
 
Managed to fix this.

Turned out I just needed to reseat the CPU.

Everything else worked as it should but as soon as Slot A was used for RAM then it wouldn't post. All done now.
 
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