Adding more RAM.

Solution
Installing multiple single modules that have never been tested together is not guaranteed to work or how it will work. Doing so may require slower clock speed, looser timings. increased voltages to get it to work. Using a single kit is what is guaranteed and recommended.
Installing multiple single modules that have never been tested together is not guaranteed to work or how it will work. Doing so may require slower clock speed, looser timings. increased voltages to get it to work. Using a single kit is what is guaranteed and recommended.
 
Solution