Cant install 4GB ram on my asus a8v-vm

[Lezourez]

I can't install more than 2Gb of RAM on my ASUS AV8-VM when I add another 2 Gb the PC won't boot. Both sets work on their own and I've installed them as matched pairs.
Any ideas

 

[T_T]

Have you installed one module in either slots?

Example:

DIMM0: Occupied
DIMM1: Unoccupied
DIMM2: Unoccupied
DIMM3: Unoccupied

DIMM0: Unoccupied
DIMM1: Occupied
DIMM2: Unoccupied
DIMM3: Unoccupied

etc, etc

 

[Lezourez]

Not yet but I'll give it a try

 

[Lezourez]

Slot 1 boots ok, slot 2 boots ok, slot 3 no boot, slot four no boot, slots 1&2 boots ok.
With slots 1&2 filled, Putting an DIMM in the 3rd slot no boot, 4th slot no boot, 3&4 no boot.
I've done this with each Dimm and get the same results.

 

[Lezourez]

You can't change the voltages on the board