"Where can I find the Bios and what do I look for?"
Such updates are from the system maker such as Compaq/Dell/other or if a machine that was made, the motherboard maker. You can call the place that sold you the machine to verify these items.
"When I boot up I get a 512, I am sure that is not it."
When I boot up I get more than a 512. Much more is on the screen which helps me tell what's going on.
In closing, you post is far too light in information.
Where can I find the Bios and what do I look for?
When I boot up I get a 512, I am sure that is not it.