RAM installation, beep error code > Power Supply Failure!

[topcat88]

Hi,

I am trying to add two more RAM modules (2x2GB DDR2) to my motherboard(Gigabyte EP43-DS3L) but i am getting continuous short beep error code, then auto restart. which corresponds to power supply unit failure. (PSW Termaltake toughpowerXT 675W)
I already had 2x2GB installed at slots 1&2.

Beeps happen when i try to install any RAM in slots 3&4. I tested only one RAM and this happens in Slots 3&4 only.

Is it a short circuit or maybe a bad capacitor? i checked the pins with magnifying glass they seem fine!

any ideas what the problem might be? MB is 10Y out of warranty, im ok desoldering stuff to fix it.

 

[molletts]

According to the motherboard manual, the memory should be installed in slots 1 & 3 for the first pair of modules then slots 2 & 4 for the second pair of modules for dual-channel mode. If you've got your existing pair of modules in slots 1 & 2 (i.e. single-channel mode) then maybe the board is just getting hopelessly confused when it finds an old module on one channel paired with a new one on the other.

Have you tried putting the existing modules in slots 1 & 3, and the new ones in slots 2 & 4? (In the English version of the manual, version 1006, on Gigabyte's website, it's section 1.4.1 on page 18.)