The "Registry Cleaner" you purchased is mostly likely a sales scam which has ruined your Windows 7. These are Public Enemy #1 of Windows 7 which will not tolerate the mindless tweaking they do.
If you want to clean your PC use CCleaner Disk and Registry tab which is a genius program recommended by everyone here, while no one here recommends any "Registry Cleaner."
You may still be able to System Restore
to a point before you likely ruined Windows 7 with the scamware. I would try that now. We can then help you troubleshoot your wireless problem without the interference of having run the worst possible software you can run on Windows 7.
After assuring your wireless driver
is updated in Device Manager, rightclick the wireless connection in System Tray to run the troubleshooter. What does it report?
You cannot expect to mess with Windows 7 the way you apparently do and not need to periodically restore it to factory condition, or even better let us help you achieve the superior Clean Reinstall - Factory OEM Windows 7
sticking with the Best Practices tools and methods within to get and maintain a perfect install.