BitLocker C'est un fonctionnalité introdus gratuit de Microsoft sur les systèmes d'exploitation Windows Vista,  Windows 7 Ultimate et Enterprise Windows 7, pentru a proteja datele de pe disque dur. Cu ajutorul BitLocker avem posibilitatea de a crypte (encryp hdd drive) atat partitia de sistem cat si partiile de date ale hard-disk-ului, insa pentru a face acest lucru avem nevoie de Trusted Platform Module (TPM). Nu toate calculatoarele / laptop-urile au acest TPM intergrat, iar atunci cand dorim sa activam BitLocker pentru o partitie, ne apare mesajul :

A compatible Trusted Platform Module (TPM) Security Device must be present on this computer, but a TPM was not found. Please contact your system administrator to enable BitLocker.

Cum putem folosi BitLocker daca nu avem Trusted Platform Module (TPM).

1. Deschidem Local Group Policy Editor. (run – Gpedit.msc sau tastam “Gpedit.msc” in Search programs and files (Start Menu))

2. In Local Policy Group mergem la Configuration de l'ordinateur > Modèles administratifs > Composants Windows > Bit Locker Drive Encryption > Operating System Drives si facem click-dreapta & Edit (sau dublu-click) pe Require additional authentication at startup.

3. Bifam “Activer” in fata la Require additional authentication at startup si ne asiguram ca este bifata si casuta de la Allow BitLocker without a compatible TPM.

4 Appliquer & D'ACCORD & Redémarrer l'ordinateur.