The motherboard wouldn't boot with any RAM installed in one of the two RAM slots on the motherboard - remove RAM from that slot, and the system booted fine with RAM in the other slot only. The first one I encountered was a couple of years ago - I opened up a brand new ITX celeron board and I eventually discovered that one of the RAM slots was bad. I have a lot of system building experience, and generally held the belief that bad RAM slots on motherboards are uncommon.
I have been meaning to post this for a while, here goes finally.
