Memory Upgrade Howto on the Asus F3S Notebook

Introduction

Here's a guide to upgrading the memory in an Asus F3S notebook (F3SA-A1 to be exact). For most laptops this is the same process. In some cases , especially on small (12" or less) notebooks, the memory may be in two locations. If you open up all the bottom compartments and don't find memory - or the size doesn't match up, check the manual. In some cases there will be one slot under the keyboard and one on the bottom, or just one slot under the keyboard. *Note all the photos will take you to larger originals on flickr if you click on them.

Step one: Determine how much memory you have.

You need to find out what memory you have in your machine in order to decide what to buy. The maximum for this notebook is two two gigabyte sticks. It takes DDR2-667 SODIMM memory.

Turn on the notebook, at the Asus screen hit F2:
If you hit it in time the screen should change to something like this. If you don't see this and your operating system starts loading, you hit F2 too late. The underlined number is your memory amount:

You'll be taken into the BIOS where it will also say how much memory is in the machine:

If it says 4096MB then you can't upgrade it. If it's less then your next step is to open up the computer and check if you have one or two sticks of memory installed. If you have an "odd" number like 3GB, 768MB, or 1.5GB you don't need to open up to find out, it has two sticks for sure. If theres 512MB, 1GB or 2GB you have to open it up to see whats in there.

To open it up, get a small phillips screwdriver. Flip the notebook over and unscrew the screws highlighted in this photo:

Then pry the cover open carefully. There is a small slot in the left side to slide a nail or screwdriver under. The edge on the outside of the notebook has several small tabs that hook into the notebook body. It should pull out when its at around a 45 degree angle:
Here's what it looks like inside. The memory is on the top left. There are two slots. Close it back up and go buy your memory. Get DDR2-667 SODIMM, preferably a matched pair of 2GB sticks. PC Village is a great store to buy it at.

Step two: Put in the new memory

So you've bought your new memory. Open the case up as illustrated above. Remove any memory you need to, then put in the new memory.

Removing memory: Each stick is held in place by two snapin tabs on either end of the memory slot. These are highlighted in red below. To remove a stick, put both tabs away from the memory stick at once. The memory should popup a little bit, tilt
it out on an angle like the stick on the left below. It should then pull out easily.

To put the new memory in, first make sure you line up the notch in the stick to the tab in the slot. It is possible to put it in backwards if you push hard enough so take a quick look before you push the memory in:

Line up the notch and tab, and put the memory stick in on an angle, about 45 degrees as shown. Push it in the slot on an angle and then rotate it down flat. The two snaps should click. You may have to pry them open a little bit.

Do the other slot if needed. You should end up with something like this:

Screw the cover back on and bootup. Make sure it shows the right amount of memory installed. Beware that depending on your operating system, with 4GB installed as little as 2.7GB may be usable. On most 64bit operating systems 4GB will be usable.