Not necessarily. Some of the nasties also break your internet connection string and if its broken even reinstalling Windows won't fix it. That's why you should use LSPfix software to fix the connection string before reinstalling Windows. The best course is still prevention and having either IE-SpyAd or Qwik-Fix will keep dangerous websites out of bounds. So if a kid disables anti-virus software or a firewall, malicious code can't run because its blocked. Think of it as a condom for the World Wide Web.
Thanks for these! We do all of our schoolwork on the computer and with the Internet, so I've been looking for ways to protect the systems.
Thanks as well for correcting me. I have limited knowledge of computer innards, so the Adware problems can cause a great headache. We DID try any number of programs after-the-fact and, although the bug appeared to vanich it would come back upon re-start. For us re-installing Windows worked. But there are numerous nitwits out there constantly thinking of how to destroy the property of others and, as someone else pointed out, it is difficult for any program to keep up.
You are right about "prevention."