That depends largely on the maker of the Recovery CD-- I have seen them that do allow for non-destructive recovery-- but they are the exception rather than than the rule.
The thing is to check first ... or if you have a friend with a CD-burner you could use:
UBCD for Windows
It has a ton of tools all (100% FREE) -- for fixing all manner of issues.
P.S. If you fix your PC with this... consider a small donation ( even $5.00) it is entirely supported by user donations-- not mandatory-- but websites cost money.
