Error Stop c0000218

[btip]

I got a message when i went to start windows on my dell inspirion 600m that said
"Stop: c0000218 {registry file failure}
The registry cannot load the hive(file):
\SystemRoot\System32\COnfig\Software
or its log or alternate.
It is corrupt, absent, or not writable.

Begginning pyhsical memory dump.
Physical memory dump complete.
contact your system administrator or technical support group for further assistance."


Please tell me what this did and how to fix it! Thanks!!!!