If ever you face any issue with your computer, it also changes the registry value. In nut shell for all the issues in your Windows the registry is responsible more or less. A slow computer issue can also be found due to a bad or corrupted registry.
How does a registry get corrupted? When we install any program in the computer registry creates a unique value and key for the program, any alternation to this value or key will affect the corresponding program. During the removal of any program some of its leftovers left in the registry and they create issues later. Also there are many other entries in the registry that can create many different kinds of issues.
How to correct or repair the registry? - It is not advised to repair or correct any registry keys or value manually. If you are facing any registry related issue you may use a good registry cleaner program to clean and repair the registry. A good registry cleaner not only repairs the registry but also can create a backup in the system. However to choose a good such program is extremely risky task again. Most of the Windows registry cleaner do not repair the PC completely or make some ill effects to the system. Thus be cautious about it.
Do not use too many PC cleaner programs-: It is also not recommended to use too many PC cleaner programs in the same PC. People usually follow this practice and which proves to be nothing. Just using a single good program is enough.
Few of the good freeware are listed below.
Mbam or malwarebyte from malwarebyte org
ATF cleaner (though it’s not a registry cleaner but it cleans all temporary and useless data from your computer)
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