Here is a tough one, cloning or restoring a backup to a new drive for a Toshiba M400 returns a BSOD with Stop 0x7B error.

Here is how to fix it.

1. Install New Drive into drive bay
2. Boot M400 and press Esc
3. When prompted “Check system. Then press [F1] key.” press F1, to enter the BIOS
4. Use Page Down key to go to the 3rd page and change the Built-in HDD from JBOD to 1RAID-0
5. When you save you will be prompted for the top secert code, this is: 1 2 3 4 [enter]
6. Save and exit the BIOS
7. Complete the system restore/ clone (if cloning from one drive to another, for performance I find it better to take the 2 drives and plug them into 2 SATA ports on another computer and clone there, much faster than an Image or using an external enclosure

A big thanks to the guys here: http://forums.toshiba.com/t5/General-Troubleshooting/M400-Restore-Issue/td-p/25211 for their help and input.