If your MacBook isn't booting up, and you suspect your hard drive is bad, there are a few things you can do. If your data is backed up, you can simply reload the MacOS if you have the disks, or have created a boot USB drive. Put the restore media in the disk drive, or the USB and turn on the MacBook. When you hear the chime hold down the option key and choose the boot device, and then follow the prompts.
On the newer MacBooks you can do an internet recovery. You turn on the MacBook and hold the option -R keys when it chimes, you connect to your wireless network, and follow the prompts.
If neither of these options work you may have other problems. Possibly a bad hard drive, or a bad hard drive cable. Quite often the hard drive cable fails, and customers who think they need a hard drive, simply need to replace their cable. If their data has not been corrupted, they won't need to reinstall the MacOS with a cable replacement. It is not too difficult to replace the hard drive cable, but there are many different cables for the different MacBooks and a lot of the "replacement" cables are of poor quality, and can cause problems.
If your hard drive is actually bad, and needs to be replaced we strongly recommend spending the extra money and purchasing a solid state hard drive (SSD) for your Mac. They are much faster, and possibly more reliable.
If you need help with any type of data backup, data recovery, or hard drive, or hard drive cable installation give us a call. We will do all we can to get your MacBook up and running.
As Seattle Laptop we have a wide range of hard drive replacement options available to our Mac User customers. Remember to ask about an SSD Upgrade.