The popularity of these tools is growing - i learned that many of today's computer users take advantage of these applications when it comes time to fix ntdll.dll error and many other problems. Perhaps your current pc is not behaving as you'd like, but don't throw it away; it's definitely worth checking out a registry cleaning tool first - you may find that this is all you need. Besides everything we've covered here, to really keep your system - and your entire pc - operating at its best, it's a matter of getting rid of the unnecessary applications, games, files, etc. Avoid computer hassles by remembering that your pc is similar to the car you drive since it calls for a maintenance routine to keep it operating at its optimal level. Perhaps you can think of some coworkers or friends who always seem to be adding/removing programs and may be having troubles as a result - then i'm sure they would find this article very worthwhile.