With any repair utility, you will need to remember two golden rules. Firstly; Do not try to repair something that is not broken, you might break it. Secondly; the utility cannot repair it all, it is not like the all-seeing and all-knowing Oracle, and it cannot anticipate each and every situation, but this all said; Complete Internet Repair should be able to help with most of your internet issues.
Complete Internet Repair 5.2.3.4010: Solve many internet and network connection issues in just a couple of clicks.