I have 4GB 1600Mhz DDR3 RAM and I recently bought 4GB 1333Mhz DDR3 RAM to add to my MSI Z87-G45 Gaming Motherboard.
However, in Windows 7, the new 1333Mhz RAM is not recognised but is recognised in the MSI Z87-G45 Motherboard as shown in the MSI Bios.
The new memory is however still not shown as ''added'' to the PC as it says it still has 4GB of ram and that the new ram is just simply there and not doing anything.
I tried lowering the speed of the higher speed ram to the same 1333Mhz speed but there is not difference and both the Bios and Windows 7 just show 4GB inside with the Bios saying that the new RAM is there but not doing anything.
Please help...