Boot critical file is corrupt

A computer of a family member of mine has recently started showing the following message :
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Boot critical file is corrupt.
Repair action. File Repair

Result failed. Error code = 0x2
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I can still use windows fine, however this is a big nuisance, and i can think of no explanation of why this is happening. I have installed no new apps or hardware of any sort in the recent months either.

It is running Windows Vista Premium [ No service pack ]

I was wondering if anyone has had this problem, or if anyone knows how to fix this problem ?

Thank you in advance

Oliver

[ apologies if this thread is in the wrong area ]

Try startup repair and SFC. And install SP1.

http://www.vistax64.com/tutorials/91467-startup-repair.html
http://www.vistax64.com/tutorials/66978-system-files-sfc-command.html?ltr=S
http://www.vistax64.com/software-tools/183170-system-file-check-tool.html