|Didn't your Pay-For Software come with the option to Back Up before Delete?|
There are too many good to decent Registry tools that are free to even consider Paying for it.
You didn't happen to pay for this because you tried the Free Scan that showed hundreds of registry errors then wouldn't fix any till you Paid for it?
That's the first sign of bogus software and one of the oldest scams on the NET. Hope you used a Credit Card so your bank can help you get your money back.
Try CCleaner, http://www.filehippo.com/download_c...
There is nothing to learn from someone who already agrees with you.