Stiction is when the hard drive heads become stuck to the platters (disks). The platter motor is trying to spin-up but can’t because the heads are stuck to it. The drive will either buzz or vibrate and have no spin when turned on. The cause of stiction is a result of smoothness and is exacerbated by humidity and other liquids condensing at the head & disk interface. The only solution to this problem is to remove the stiction.