Memory stick

Read what you wrote again.

You bought a memory stick to bring PC to 1gb, and it's showing 1gb.

I bought a loaf of bread but I have a loaf of bread, can you help.

I painted my car blue, but now it's blue, can you help.

See the issue with your post?

Did you maybe mean to say you bought "ANOTHER 1 gb stick" and it's only showing 1gb?