I have new a ram of 4GB kingston so i plug it wit my old2gb RAM slot i should have up to 6GBs of RAM. However when i start windows it reporting 3.5GBs of RAM in it. However . setting mobo BIOS and it shows as 4GBs.
Rearranging the RAM sticks doesnt make any change. All the RAM speeds will be set to run at PC5300 because i want to overclock please can any body tell me what is wrong ? thank you.