One important factor which many people fail to take into account when doing computer maintenance and optimization methods is to clean their registry.
Over time your registry becomes clogged with old data entries from programs you have uninstalled thus leaving unnecessary data entries in your registry.
With all the registry cleaners which are popping up every day on the internet it can become a tedious task to find one that best suit your needs in terms of compatible and reliability.
I've came across quite a few registry cleaners that actually deleted registry data entries which were entries used by Windows operating system.
This is definitely something you don't want to use because if that data is erased then your operating system will stop working.
To the point to where you won't be able to boot windows back up.
Other registry cleaners may or may not be compatible with your current Windows operating system such as Windows Vista.
The registry is one of the most important parts to your computer software wise.
Every single program that you install uses the registry to hold data for it.
This is so where if you say uninstall something but didn't back up whatever personal data you had made with it wouldn't be completely lost.
Other programs use the registry to store convenient things like recent files opened etc.
Out of all the registry cleaners that I have tried and tested myself.
I must say one that really stood out was Registry Fix.
It was very easy to use and didn't try to delete my Windows operating system's data entries.