I am currently running vista, I have 1gb of ram already (894 is only being read) the 2 512mb sticks of ram I have are pc2 4200 533mghz.

The one I bought is 1gb pc2 4200, I have a dell c521, with an amd athlon 64bit x2 duo core processor. So I know I bought the right kind of ram. So is it a faulty one? Or my motherboard, which is an nforce not support it?

The kind of ram I bought was kingston, since that's all circuit city had.

try using only the 1gig stick for now, put it in the first ram slot.

try using only the 1gig stick for now, put it in the first ram slot.

That doesn't work either.

i was at staples yesterday, and i was looking at a laptop, it said it had 1.96GB, which is a similar issue to this

could it possibly be graphics aperature[sp?]?

Onboard Video that uses the other part of the RAM .

wait, im under the asumption that you have 2gigs of ram, correct?

jca2007, Just return the stick and ask if they can check it, also try to change it for 2x 512MB...