Open the RAM compartment. You should see 2 screws. Remove and keep them in a safe place.
Toward the bottom, you should see 4 more screws: 2 behind and 2 on both sides. You need to remove them.
You can now open the case. It should come off easily, without notable resistance.
You should be able to locate the drive. It will probably be connected to some whide ribon cable (ATA connector). That cable normaly have two connectors, one connected to your actual drive and the other to your CD or DVD unit. It may be possible to connect a seccond ribon cable.
A SATA cable is thin, roundish and have a single connector on each end. The power connector for those drives is also different.
You probably only have ATA/PATA connectors, but it's possible that you may have only or some SATA connectors.
Make sure that your new drive have the correct connector. There are no mistaking, the two kind of connectors are radicaly different.
If you can connect a second cable, you only need to connect that cable to the motherboard, connect your new drive on the far connector and connect an available power connector to the drive. You can actualy install two drives in this case.
Next, you'll need to format the new drive and tou are ready to go.
You can replace the actual drive with the new drive. In this case, you'll need to reinstall the operating system from scratch.
Before changing the drive, you'll need to save all your data to some external storage.
It will be absolutely impossible to restore the factiory settings as they are contained on an hiden partition of the original drive that you just removed.
Electro, November 2012
