Discussion Starter · #1 ·
I bought 4 DDR2 PC2-5300, DDR2 PC2-6400 Ballistix ram sticks for my Dell XPS-420. I can only load 3 of them at a time. If i install the 4th the computer will not boot and makes a constant beeping sound. One long tone not a cyclical beep. Any help out there would be greatly appreciated. If I need to post more inof please let me know.