|"I'm getting the motherboard info from CPU-Z"|
And all it's doing is identifying the chipset. Open the frigging case & find the model number on the board.
"Slot 'A1' has 2048 MB
Slot 'A0' is Empty"
Did you try swapping them around? You have to determine if the RAM itself is bad or the RAM slot. Try just one stick in A1, then try the same stick in A0. If it works in one slot but not the other, the slot is probably bad. Try the other stick...if it also works in A1 but not A0, you've found your problem...A0 is bad. If the 2nd stick isn't recognized in either slot, the stick itself is bad.
It ain't rocket science.....