If you begin to have problems with a Hard drive, or operating system failures, it is best to get it to us before it fails so we can endeavor to back up your data and profiles, then we can repair the Operating system if the Hard drive is fine or transfer the data and replace the operating system if it wil not repair. Then if the Hard drive is bad we can replace it with a larger drive and transfer you data and profile info to the new drive, so it is less expensive to maintain both the computer and retain the important data, with out catastrophic loss, or having to go to a drive recovery service which is very expensive!!  We do recover a large percentage of data from crashed systems, from hard drives, laptop failures, and workstations.  When you begin to see erratic system behavior, dramatic slowing of your system, blue screens (of death) interrupting you ability to load the operating system.  We recommend early reporting of these kinds of errors for the greatest chances of full recovery.   I can help recover most or all of your data, sometimes if you wait to long, with physical drive failures, the data can be destroyed, or require a very expensive clean room drive recovery process. So when you begin to get symptoms, its best to get it in early for evaluation and backup, drive cloning recovery, and much less expensive as well to salvage data!!