I'm knew to this so please bear with me if I get it wrong.
I have been given an old pc its a msi 845 pro 2 with 128 mb of ram two single sided sticks. The bios shows 68 mb which was probably the original setting. I want to upgrade to 512 mb and have a new double sided stick ready, the book says the mobo will support 3 gig in any of its slots (3) so on paper it looks ok.
The trouble is that when I fit the 512 in any of the slots the pc will not boot up, I have even tried updating the bios and fitting all 3 sticks together, desperate A?.
Any help please guys.