SatelliteThe consumer range, and the one that turns up dead most often. One cover on the underside, a 2.5in SATA disk at 5400rpm behind it, frequently a Toshiba mechanism. What fails first is the lid, the charging board or a hinge, and none of those hold data.
Satellite ProThe work build, bought in batches and set up by an IT department. They come in encrypted: BitLocker tied to a company login, a TPM soldered to the board, and a disk that reads as static until a key appears.
The big 17in bodiesP-series and Qosmio chassis, with room for two disks and enough weight that they stayed put. They ran warm and often sat on a carpet. What reaches us is a mechanism that has been too hot for years and is dropping sectors.
The final builds, on M.2Late on, the 2.5in bay was replaced by a short M.2 card — SATA to begin with, NVMe at the end. The slot looks the same for both, so give us the model. A card that has vanished from the BIOS is a controller fault, not deleted data.