Hi Guys, I have a DG965RY board with Intel dual core 3.0 Ghz proc. It was working fine with 2x1GB (667 Mhz) Ram till today. Today I got a 2 GB (667 Mhz) RAM stick. When I installed it with my two 1 GB RAM sticks it does not work. If I intall it alone it works fine.
So, I am looking for some help to find out why my motherboard is not working with 2GB and 1GB RAM installed together.
You could contact Transcend and ask them why they don't work. Those modules are not on Intels list of certified modules, but they should work just fine. The BIOS might also have been modified at some point and no longer support your configuration. An email to Intel support would answer that question.
Why didn't you buy two modules? If you wanted to add 2G, then you should have bought 2 modules identical to the ones that you already had. Dual-channel provides better memory performance.
If adding one more JM667QLU-2G module doesn't work with the existing modules, then just sell the JM667QLJ-1G modules. You'll still have 4GB and it will work. Before doing it I would confirm with Transcend that they will work.