Acer Aspire One ZG5 Ram not showing up!

try only the 1gb stick in the laptop... you could have incompatible memory sticks (will not work together)

From the net, I believe this laptop only supports 1gb max memory. not sure if 2x512 or if 1x1gb will work.
 


the 512mb is non removeable
 


in that case, you could try a bios update. Might fix your issue with ram.
 



How do I do this? :)