Spyware is like a computer virus in that it infects your computer without your permission and it harms things it shouldn't be touching, whether it's digging through the data files on your PC, or doing something serious like corrupting critical system files that leaves you to wonder just what is taking place.
Spyware can get into your system any number of ways and if it infects your PC you may not be able to block it from doing harm to the PC.
While it's very probable that spyware has left your computer useless, it is also very possible that you can reclaim your system and get rid of the spyware.
So, how can this fix be accomplished? There is software packages available on the web for removing spyware.
This software compares all of your data files to all identified spyware apps and searches for matches.
When the cleaning tool identifies the spyware app, it lets you determine what to do with it.
Normally you will decide to delete the spyware app, unless it has tied itself to another data file that you need.
Even if spyware is not damaging your system today, it will some time.
You can deal with the issue of spyware sneaking into your computer system by using one of the many online spyware removal tools.
As a computer repair guy that works on PCs every day I know that it is a great deal simpler and less costly to use a spyware removal program than it is to hire someone.