One of my machines came up this morning with a BSOD. The message is:
"The registry cannot load the hive(file):
\SystemRoot\System32\config\Software or its log or alternate"
It is corrupted, absent, or not writable."

Then it does a dump of physical memory to the disk.

Re-booting into safe mode gives the same result, as does returning to the last known
good configuration.

How can I recover from this? Repair installation? New HD, and copy off what data I
can (provided the disk is readable)?
Thanks,
Mike