Is it the screw holes or the screws that are stripped out? If it is the screws, buy new ones. If it is the holes, find a tap and screws the next size bigger and re-tap the holes. If the holes are not all the way through, you may need to look for what's called a bottom tap.
If the holes weren't stripped out due to "user error", I'd contact Corsair with the problem and ask for a replacement.