Could not detect both memory stick
I have a dual core intel pc. I original have 2 GB memory DDR 2, I added 2 GB more of the same brand and specs. I have windows 7 installed, when I check computer information, its only showing 2 GB, it should show 4 GB. Is the other card faulty? I checked the new card alone, its being detected by the system, but if placed together, it shows 2 GB only.
Please help.








