A good registry cleaner can help fix several common computer ailments. If you're experiencing problems such as frequent error message, slow bootups, crashes and freezes, and overall sluggish performance, you probably have errors in the Windows registry. These errors can cause Windows to "trip" over itself when looking for files related to hardware and software settings and configurations, which are vitally important to the proper functioning of your PC.
Can I fix it myself?
In most cases, the answer is a resounding "NO!" Tinkering with regedit (the editing program that comes with Windows) is not for the faint of heart, nor for novices looking to poke around. Unless you know about HKEYs, Hives, and Values, you are better off leaving the registry alone. Making changes can result in a computer that doesn't even load Windows anymore, let alone run smoothly.
What can a registry cleaner do for me?
In most cases, a good registry repair utility can make marked improvements in the performance of your PC. Because these settings and files are vulnerable to corruption just like any other file in your computer, they are a very common cause of computer problems.
A repair utility can clean up broken, orphaned, and corrupt files and entries within minutes. It could literally take you days to find all the errors yourself, even if you knew exactly what you were looking for. Many of these special repair programs can find upwards of 800 errors, and that's on a PC that's running fine anyway. Even advanced computer technicians would never be able to fix, let alone find, 800 errors in the registry. In fact, many repair technicians use registry cleaners as part of their job.
What should I look for in a cleaner?
A good repair program will allow you to backup the registry automatically, undo changes you've made, ignore entries you don't want to remove, and help you manage startup processes. Also, a good way to know if a registry cleaner is worth its salt is whether it is consistent with its scan results. Some repair programs find differing numbers of errors in subsequent scans, which flags the program as unreliable.