10 tell-tale signs your PC is infected

5. When I connect to the Internet, all types of windows open that  I have not requested
This is another certain sign of infection. Many threats are designed to redirect traffic to certain websites against the user’s will and can even spoof web pages, making you think you are on a legitimate site when really you have been taken to a malicious imitation.

6. Where have my files gone?
Hopefully nobody will be asking this type of question, although there are still some threats around designed to delete or encrypt information, or to move documents from one place to another. If you find yourself in this situation, you should seek immediate help from an expert.

7. My antivirus has disappeared, my firewall is disabled
Another typical characteristic of many threats is that they disable security systems (antivirus, firewall, etc) installed on computers. It just one item shuts down it might just be a specific software failure; but if all your security components are disabled, you are almost certainly infected.

8. My computer is speaking a strange language
If the language of certain applications changes, the screen appears back-to-front, you might just have an infected system.

9. Library files for running games, programs have disappeared from my computer.
Once again, this could be a sign of infection, although it could also be down to incomplete or incorrect installation of programs.

10. My computer has gone mad!
If the computer starts acting on its own, you suddenly find your system has been sending emails without your knowledge, internet sessions or applications open sporadically on their own, your system could be compromised by malware.

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