The laptop has a 5400 rpm 750 GB Sata 2.5 inch HDD. Now would be a perfect time to upgrade it to an SSD, it would make it seem like a different PC. If you decide to do that, I would use Samsung 850 EVO or a Kingston V300 if you're on a tight budget. Contact ASUS and they may be able to send you an install disk for Windows since the HDD failed, otherwise you will have to purchase a copy of Windows.