Actually I’m a Mac-user so I may not be able to help you anyway, but for those who might you provide precious little information.
You might want to read this:
How To Get Help Quickly!
What size are the damaged images – 0 MB or thereabouts?
Are all newly saved documents affected or only some?
Boilerplate-text:
Are Photoshop and OS fully updated and have you performed the usual trouble-shooting routines (trashing prefs by keeping ctrl-alt-shift pressed while starting Photoshop, 3rd party plug-ins deactivation, system maintenance etc.)?
