You'll need to replace your computer's hard drive for one of two reasons: either your current drive has a hardware failure and needs to be replaced, or you want to upgrade your primary hard drive for increased speed or capacity.

Replacing a hard drive is a fairly simple task that anyone can do with a little help. In other words, don't worry, you can do it!

To replace a hard drive, you need to back up the data you want to keep, remove the old hard drive, install the new hard drive, and then restore the backed up data.

Here's some more information about the three steps required: