Need Help with my ram please

[des1017]

I have a biostar k8hna grand MB with 2x512 corsair ram... it was working fine earlier till I took my xms series ram and was testing it on the machine, Now my 2x512 is being read as 2x256... wtf? ive never even heard of this... when i attempt to just leave 1 in the slot it is still read as 256mb. These are 512 sticks that worked fine earlier.

 

[Nitestick]

reset the CMOS by either using the reset jumper or removing the battery or both. obviously unplug your computer while you do this

 

[des1017]

yea i reset the cmos and it did not help.. but i didn't remove the battery....

 

[Nitestick]

are you sure the ram is back in the same slots as they were before?

 

[Apokalipse]

try a BIOS update