CBPetrovic
Do you have a 32-bit, or a 64-bit operating system?
When you have a 32-bit system, this does not recognize 4gb of memory, 3±gb is all a 32-bit system can address.
Basically what it means is, while you can install 4gb of memory in the system, the reason it’s not recognized is mainly due to 32-bit processors and/or 32-bit applications on memory address limitations.
64-bit processors & operating systems will recognize beyond the 32-bit limitation.
Bev.