If that were the case I would honestly take this as the time to do a clean install.
You can do so even if all you have is a upgrade version. Clean Install with a Upgrade Windows 7 Version
I'll be perfectly honest with you I have never seen 7 run properly when someone only used the update feature. It always seems slow and problematic.
Anyhow that being said it's not what you seem to want right now.
My other thought is have you tried uninstalling the devices from the device manager?
It's possible that if you remove them and reboot the automatic driver detection will kick back in.