|Without any detailed specifications of your motherboard model number or the ram modules you have we would be guessing about your problem. You may have a bios limitation on the amount of ram the board can take. or the new chip/s you bought are incompatible or maybe they are faulty.|
Step 1. Remove the new ram.
Step 2. Visit www.crucial.com and let them scan your system. Generally they will advise you of the maximum amount of ram your board can take as well as the specifications you need
Goin' Fishin' (Some day)