If you find that your computer seems to be slower than before, you may think that it has been infected by viruses. But when you have scanned, you may find that no viruses found.If you still can't find any problems with anti-spyware, then the problem probably lies in registry.
You can try using utilities like:
Glary Utilities 2.5.2 ---> click to download
to fix the registry problems.
This freeware also includes the ability to remove internet traces and invalid registry. It can also securely delete your files.
This will make your computer running faster at startup and increase its performance.
