You know that your computer can be infected with a virus, that's pretty obvious.
What you may not be aware of, however, is how these viruses work to destroy your resources.
Increasing your awareness on how they damage and corrupt the programs and applications in your computer can lead you to effectively deal with the infection and eliminate these viruses.
The Different Types and How to Treat Them Viruses can come in various types.
From these two general classifications, you have these variants:

• Viruses that target the boot sector of your computer.
  As you turn it on, the virus is loaded into the memory of your PC and starts to change the files of your operating system with its own files.
  The effect ranges from corrupted to missing files up to crashing of your PC.
  
• Treatment: You need to use a clean disk to boot the system so you can reinstall a clean copy of your operating system.
  Since this type of virus is considered as the grandmother type, you can easily treat and remove the infection with a good anti-virus program.
  
• Trojan horse viruses.
  If you have heard this a thousand times, it is because this is one of the most prevalent infections and attacks that can happen to your computer.
  But contrary to popular belief, a Trojan horse is not a virus infection.
  

It is actually one of malicious software codes that find its way into your PC by disguising as legitimate program or application, for example PC game, but actually works to accomplish their destructive purposes.
Once your PC is infected, the Trojan horse can enable remote access to your computer, decrypt your passwords, delete or alter files, send files to hackers, crash your system and even destroy anti-virus files.
Treatment: The immediate treatment is to run an anti-virus scan of your computer.
If you haven't installed any anti-virus protection, you can perform an anti-virus download from a reliable and trusted site.
Make sure that your anti-virus program is schedules for regular updates since viruses are known to multiply and evolve rapidly.
You should never take viruses for granted.
The worse you can do is to underestimate their capabilities to destroy your system.
It is to your advantage to get your anti-virus protection and learn as much as you can about how to treat viruses.
Online, there are videos that will show you how to remove and prevent viruses.
Find one that demonstrates how you can use free tools as your protection against virus infection.