Notebook Data Recovery is accomplished the same as with any other computer.
notebook data recovery PowerBook
The priority of notebook data recovery is to create a raw image of the data so that logical analysis can determine the nature of the data loss situation. If the media is inaccessible to recovery software due to physical damage, you will probably need professional help.

Recovery of crashed hard disks often involves replacing failed or damaged components in a clean environment and using specialized hardware and software tools to create the raw image. Failed components typically include electronics, read/write heads, head assemblies, magnets, and drive motors.

Logical recovery uses the raw image by examining the low-level data sectors and determining what fixes to filesystem structures are needed to get access to the critical data. Sometimes the existing filesystem structures are missing or damaged so much that data has to be extracted directly from one or more fragments of the raw image.

At whatever point you erase a record, it is just set apart as erased and later overwritten by the working framework with new information. The key is to recuperate the records previously they are overwritten with new information. The more you pause, the more troublesome it progresses toward becoming to recoup your records securely.