Tech editor David Gilbert explains how to boost the RAM of a 2007 MacBook.

1. Check your system

You can see how much RAM you have installed on the About this Mac menu.

The first thing you need to do before upgrading your system is to check how much RAM you already have installed. This is a relatively simple process of clicking on the Apple menu in the top left-hand-corner and hitting the About this Macoption.

This will pop up a windows which will tell you which processor you are running, what version of Mac OS X you have installed and of course how much RAM is installed - a tiny 1GB in my case

2. What much RAM can you handle?

The next thing to find out is how much RAM your system supports, as this is not immediately clear from the Apple menu.

The easiest way to do this is by downloading a simple tool from the website of online hardware retailer Crucial which scans your system and gives you back a detailed report of not only the amount of RAM your system can handle but what type of RAM is compatible too.

My system has two RAM slots each capable of handing 2GB of DDR2 RAM each.

3. How much RAM do you want?

Because the price of RAM has come down so much in recent years that you should if at all possible max out the RAM on your system.

So I was looking to boost my total RAM to

4. Buying some RAM

Crucial will give you the option to buy the RAM straight from them, which gives you the assurance that it is just the right specifications you need.

However if you are a little more adventurous you can look for cheaper prices elsewhere online and after not too much searching I found 2 x 2GB DDR2 RAM from Komputerbay on Amazon for £37 - which was around £12 cheaper than direct from Crucial - though I do have Amazon Prime free shipping so you should consider this extra cost if your ordering online.

5. Installing the RAM - What you need

The RAM, your laptop, a small Philips head screwdriver and a coin.

6. Installing the RAM - just do it

The battery compartment on the MacBook gives easy access to the RAM slots and hard drive.

While it can be intimidating to think about messing around with the hardware of a laptop, this process is very straight forward.

The first thing to do is make sure your laptop is completely off (not in sleep mode). Next flip it over and you will see an unlocking mechanism next to your battery. Use the coin to flip it to the unlock position and you will see the battery pop out.

Once you have the battery out of the way, unscrew the three screws which hold the bracket protecting the hard drive and RAM slots in place.

Once that is removed, you will see the two RAM slots with levers poking out from both. To remove the previously installed RAM, flick these levers from left-to-right and the installed chips will pop out easily.

Once both are removed, open your new RAM chips and line them up with diagram shown on the inside of the compartment. All you need to do essentially is make sure a notch in the bottom of the RAM is on the left-hand-side of the slot.

Push the RAM in firmly and evenly, until you feel it slot into place.

All you need to do now is replace the bracket and battery and rotate the lock back to the locked position.

7. Turn back on your laptop

Once everything is back in place, and there are no screws floating around mysteriously, all you'll need to do is switch back on the laptop and make sure the RAM is registering by once again checking the About this Macmenu.