Installed 4 gb ram but system reading 512 mb!!!!!!!

PCHacked_007

Reputable
Mar 1, 2014
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4,510
i have a gigabyte mtrbord with 4 slots of ram 2xddr2 2xddr3 when I put a 2gb ddr3 ram and a ddr2 2 gb then system read it as 512mb but when I put either ddr2 and ddr3 alone system read both the ram correctly 2 gb...pls help me !!!!