In the case of a drastic reduction in performance, it can indicate the presence of a computer virus. In this case, it is advisable to download a good antivirus software to do a full system scan. Alternatively, there are online virus scanners that you can run through your internet browser. After detecting the virus, remove the virus immediately and restart your computer to clear all traces of it.
When we create new files, or save changes to existing files onto the computer, very often the files are created all over the hard disk. Files become fragmented and empty spaces appear on the hard disk. If a file, or a program is fragmented, it takes the computer longer to load the file or program. This is because it has to hunt around for all the pieces. This is inevitable unless one doesn't add or remove or change files or software on the computer. Fortunately, Windows comes with a tool called Disk Defragmenter. The Disk Defragmenter can help to speed up loading speed in general by compacting all the files together, making Windows search less each time it needs to load something.
Very often, the main reason behind a slow running computer is that the Windows registry is acting up. The Windows registry is the central database in the system that Windows and most applications depend on. They store information in it all the time, and when there are wrong or obsolete entries in it, performance will drop dramatically. The registry grows in size over time because information is saved in it but usually not removed, even when the information is no longer valid or necessary.
To resolve the registry problems, a registry cleaner software is required. A registry cleaner will scour the registry to look for problematic or obsolete information, and then fix them automatically. When the registry is optimized by the cleaner, the problem of a slow running computer will disappear, because Windows will then run faster.
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