Posted by Super User

This error message means your computer is having a hard time reading the boot sector of the hard drive. This may mean the hard drive is failing, but it could be a number of other things as well. One of the more common causes of this error message is that the "map" to the hard drive has become corrupt and the system can no longer find the files. If this is the case, we can usually get your data back along with your fully functioning widows environment, with software and settings intact. If the hard drive has failed, there are degrees of failure, with varying implications for you data. Even then, most of the time we can get your data back by relatively inexpensive means. In a small percentage of cases, the only way to get the data back is via forensic data recovery, which can be fairly pricey.