Why are two gigs of memory being used?

Hi i don't get why 2 gigs of my memory are being used i have 4 gigs and when i am not running anything but google chrome my laptop is using up 2.50-2.00 gigs of memory and i only have about 4 tabs open and no backgrounds programs i used one of AVG's programs to get rid of any useless programs that start up and i don't know why it is using 2 gigs when it should't any ideas of why and how i could fix this?q

Are you using 32bit?

no 64 bit

no im looking at the task manager's performance tab and it says that im using 2.52GB of ram when i have 4 gigs of ram but im not running anything that should be using up the data it makes no sense i know that a certain of the data is used up but why is it using 2 gigs?

The Windows 7 memory manager will use as much memory as it can to allow faster system operation.

It will anticipate what software you may use, based on experience, and load it into RAM (memory).

If needed, it will relinguish that memory for any new software that is started by you.

Unused RAM is wasted RAM.

Hi,
I am having the same issue as of recently. More than 50% of my RAM is used even when nothing else is running, and when I start using any additional programs, even if it's just a browser, it goes to almost 100%, slowing my computer down so much, that it is making my job very difficult.
I also cleaned and removed all unnecessary programs and processes that may be causing it, but the issue is not solved. I have Windows 7 Ultimate, 32bit.
What you saying that Windows 7 memory manager is taking up that much memory, but that it should free it up for anything else that needs it. But the memory doesn't free up for me, any additional task takes up additional memory.
Do you have any idea what may be causing this?
Thanks!

Between Windows 7 and Google Chrome, that sounds about right as far as RAM usage......unfortunately.