Crippa Andrea

If you are unable to boot your windows operative system, because you get a BSOD reporting and error loading one of the following :
%SystemRoot%\System32\Config\software
%SystemRoot%\System32\Config\system
%SystemRoot%\System32\Config\sam
%SystemRoot%\System32\Config\security
%SystemRoot%\System32\Config\dafault

You need to do this :

Try to boot with a Windows CD and go to the Recovery Console. If you don’t have a Windows CD you are able to load your hard drive as an external disk of another PC.

Replace the damage file with a copy from %SystemRoot%\repair

Have fun

If you have a network wireless nic like the Dlink DWL-G510 (that have a Ralink chipset), and you encounter some BSOD with RT61.sys, you may have to try to download the specified driver for the Nic from the Ralink site here.

Go to Software, chose your platform and look for PCI/mPCI/CB (RT256x/RT266x).