I have Intel S1200V3RPS motherboard. I bought it in September 2014 and was using 2x8GB RAMs in the first two slots till now. Last week, I decided to upgrade RAM on my server and bought two additional RAM sticks of the same model and make by the same company (Kingston). But the additional two slots do not appear to be working.
Following things work:
1) Two old sticks in slots 1 & 2 work fine.
2) Two new sticks in slots 1 & 2 work fine.
3) One old and one new stick in slots 1 & 2 work fine.
4) Each of the 4 sticks work individually in either slot 1 or slot 2.
From above 4 points, it appears that the RAM sticks are fine and they are compatible with each other.
Now, if I put any stick in slot 3 or 4 (irrespective of whether there are any sticks in slots 1 & 2), the computer refuses to start. When I press the power button, there are 3 beeps and then nothing happens. Now, I wonder if slots 3 and 4 on the motherboard are bad. This is an assembled server and I have made the wire connections. Can somebody tell me if I may have missed some wire connections so that RAM slots 3 & 4 are not working? Any other troubleshooting will also help.
I am using Intel Xeon 1230v3 processor and Kingston KVR16LE11/8i RAM modules.
(I have contacted Intel Customer Support and their only option is to send the product to their service center where they would check the problem and send a replacement. But this solution does not work for me as I have only one server and the solution of Intel will mean downtime of atleast 3 weeks.)