DST Fail= the hard drive has failed/is failing and will need to be replaced. If you are still in warranty HP will send a replacement. If not a retail laptop SATA hard drive can be used. Just be sure to get one of at least equal capacity as the original in order to use Recovery Discs. It can be larger, but not smaller capacity.For instance if you have a 500GB hdd you could use a 750GB hdd but not a 320GB hdd.
**Click Accept as Solution on a Reply that solves your issue** ***Click the Thumbs-Up button as a way to say Thanks!***