Make a backup and other preparation
First, shut down the laptop. Buy a new (and larger) hard drive to fit your computer. If you don’t already have an external backup drive, get one now. And, you’ll need “imaging” software to copy your entire laptop drive onto the external drive and then transfer it to the new laptop drive. Finally, you’ll need an antistatic wristband to prevent static damage to the new drive and existing components. Find all the parts at a computer or electronics store.
Even though it might make dealing with all the tiny screws easier, don’t use magnetized screwdrivers—or magnets of any kind—inside your computer or nearby outside.
And, if you see dust in there, resist the urge to suck it out with a conventional vacuum cleaner—you’ll need a special antistatic vacuum. Or you can blow it out with a can of either compressed air or refrigerant-based propellant cleaner.
Replace the hard drive
We’re working on a Dell C840 laptop; it’s typical of most PC-style laptops with a “slide-out” drive tray. However, to find the exact procedure for your laptop, just search online for your model number and add “service manual” to the search field.
Start the repair by backing up the failing drive to the external drive (Photo 1). Disconnect the power cord and remove the laptop battery (or batteries). Then remove the failing drive (Photo 2). Using an optional antistatic mat provides an extra measure of protection. With the drive tray out, swap out the drives (Photo 3) and reinsert the drive tray. Then boot the computer with the emergency disk and restore the data from the external drive to your new laptop drive.