Error Message occurs after you change the SATA Mode of the boot drive

So here’s the situation, PC dies you remove the hard drive and put it in a new PC. It boots and you receive a BSOD error 0x0000007B.  If you do the following : –

1. Exit all Windows-based programs.
2. Click Start, type regedit in the Start Search box, and then press ENTER.
3. If you receive the User Account Control dialog box, click Continue.
4. Locate and then click one of the following registry subkeys:
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\IastorV
5. In the pane on the right side, right-click Start in the Name column, and then click Modify.
6. In the Value data box, type 0, and then click OK.
7. On the File menu, click Exit to close Registry Editor.

It may well boot, this worked for us.  The above is pulled from MS KB Article 922976, http://support.microsoft.com/kb/922976