There are two ways to deal with problems cause by a crashed computer internal hard drive. The first is to use some of the better data recovery tools to immediately open that hard drive and copy from it all of its contents. In order to do so, many data recovery tools require you to connect your hard drive directly to a second working PC by means of cables. You can then use this working computer in conjunction with a data recovery tool which you will need to have loaded onto the working PC to search through your failed computer hard drive for every existing and recently deleted file. This is the preferable technique, as you won’t have to recover deleted files after format steps have been taken.
Barring the ability to do this, one must first put their computer into operation by reloading their Windows operating system. Reloading the Windows OS reformats the entire computer hard drive and as a consequence deletes all stored files. One must then undelete those files and restore them to their original structure using a tool for data recovery after reformat.