|If you have not yet purchased a new hard drive and you are not sure if it is sata or ide check. If the computer has a few years on it most likely it is ide.|
Don't let the sale person talk you into sata with "Sata is faster baloney" Some stores will not take back opened electronics.
New hard drives (in the box) come with a setup disk.....and easy instructions. Most people miss the Jumper settings so check the new drive and make sure it is set to slave.
Put the cd in. Select the option to make the new drive as the new boot disk. All files will be transferred over.
Now shut down and change the jumper to master and put it where the old failing drive is.
Except for the jumper settings the process is just about idiot proof.