You’d think that adding memory to a PC would be straight forward.

• Power Off
• Open the case
• Pop out the old memory
• Insert New
• Close the case
• Power on

And Bob’s your uncle.

But – it never turns out that way!

I figured I’d upgrade my 4 year old MSI mobos with some more memory,,, and for one – it won’t blasted detect both DIMMS now ( and yes I did check the MOBO manual which says you have to use DIMM slot 1&3 or 2 & 4 if you are not populating all DIMMs).

The other – bought at about the same time – I thought could take the one old DIMM add a new one and double it’s memory too – well I would never have guessed that it was using DDR not DDR2 like the other board.

At some point I’ll have to figure out what to do with:

a) why the PC won’t detect both  DIMMS

b) what to do with 2 1 GB DDR2 DIMMS  – I could try it in this MOBO – but if it won’t detect 2 DIMMS why would it work with 4?