No problem carefully remove the top glass. The monitor will swing out. You must open the back of the monitor. It could be as many as 5 Phillips screws that you must remove to get into the top box, 3 on the back and 1 each on the top and bottom. Inside you will basically find an old PC mother board. Be sure there is a hard drive installed on the right wall inside the box.
The sticks are standard computer memory there are 2 of them. There are clips on each end push them down and the memory will come out. Lightly you can clean the contacts with a pencil eraser, then reinstall.