I have 6 Rackable Systems 1u servers, each with 2x4GB PC2 5300.
3 of them would boot and POST successfully, and the other 3 would not POST. Instead, these three would beep 3 times, indicating a memory fault as per the technical product specification. The diagnostic LEDs are red, amber amber.
However, if I swapped out the memory from one of the failing units into one of the working units, the ram was fine.
I've tried booting the failing units with only 1 stick of ram, and in different slots. Same result.
I had a suspicion that the CMOS batteries in my failing servers were dead. I removed the CMOS battery from one of the working servers, and placed it into one of the failing servers. The failing server still fails to POST. However, after re-inserting the battery back into the original server which was previously working, it also now fails to POST, with 3 beeps.
I concluded that the battery I chose may also have been dead, so I purchased some new 2032 batteries. I installed a new battery into the previously working server, and it still doesn't POST. I also tried reseting CMOS as per the user guide, still 3 beeps and no POST.
I'm out of ideas. Any help is appreciated. Thank you.