Hi
The ultimate problem with lost system is that often someone will recover the hard disk data, multiple tip exist to gain the disk privilege to access the data. The remote user might not be able to log in, but the data is at risk.
For such scenario if you want to protect against that it's to use full hard disk encryption. Such system are often tagged FDE.
Bitlocker might answer your need;
Full disk encryption with BitLocker builds on the BitLocker Drive Encryption technology included in your operating system. It encrypts the entire hard disk, so that your data is safe even if the computer is lost or stolen. When you log on to your endpoint, you have to enter user credentials to unlock BitLocker.
Othe rproduct exist too, it's to see your need at that point.
Thanks