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Most of the PC users are always thinking that registry cleanup can help fix Windows errors and speed up slow PC. But actually the registry is nothing but a glorified database. The Microsoft Windows operating systems use this database, but it does not use a linear search routine to access the database, so the size of the database, erroneous or unnecessary entries in the database, don't have any noticeable effect on the efficiency or performance of the operating system.

There are a lot of registry cleaners and system optimization tools that claim registry cleanup can speed up slow PCs. If you believe what they said, the next step you will do is purchase these unused software programs to clean false system errors. Once you paid, and then it is a little difficult to get your money back.

Please see how they play to trick PC users into purchasing:

1. Always saying Free, Free Scan, Free Download on their webpages
2. Always displaying tons of false system errors
3. Always asking you to purchase license to clean the so-called errors

If you paid and cleaned the false errors, your system would become unstable, even crash.

So-called registry cleaners and system optimization tools at best make no improvement in performance, and more often than not cause more harm than good, deleting "errors" that the operating system needs in order to run properly, and at worst can make a system unbootable. They are definitely not worth the risk.

Here are 3 software programs that the authors markete them as system optimization tools, but in fact they are all Potentially Unwanted Programs (PUP). What they want is your money, but not provide solutions for your computer.

RegCure
RegCure is a program that is promoted as a system optimization tool. Some versions of this program may display deceptive or fraudulent claims about files, registry entries and/or other items on the system. These versions are detected by Microsoft security products.

FixCleaner
FixCleaner is a program that purports to scan and clean an affected user's registry. This program may display a large number of misleading errors or warnings and then prompt the user to pay for a full version of program in order to address these errors.

PC Optimizer Pro
PC Optimizer Pro is a program that is promoted as a system optimization tool. Some versions of this program may display deceptive or fraudulent claims about files, registry entries and/or other items on the system. These versions are detected by Microsoft security products.

The below is the list of the So-called registry cleaners and system optimization tools: (From A to Z )