Symptoms of an infected computer

  • Solution ID:1104650
  • Last Updated:Aug. 14, 2019 12:25 AM (PST)
  • Applies to:Antivirus for Mac - 2018;2019;2020;Antivirus+ Security - 2018;Antivirus+ Security - 2019;Antivirus+ Security - 2020;Internet Security - 2018;Internet Security - 2019;Internet Security - 2020;Maximum Security - 2018;Maximum Security - 2019;Maximum Security - 2020;Premium Security - 2018;Premium Security - 2019;Premium Security - 2020;
  • Checking if your computer is infected | Trend Micro Security

In this article, you will learn how to determine if your computer is infected by a malware.

Knowing the symptoms of a malware infected computer allows you to make the necessary actions on how to remove and prevent it.


Below are the common symptoms exhibited by a computer infected by a malware:

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Slow computer performance
No response from the computer
Computer crashes
Slow startup
Pop-up ads
Missing files
Extra files
Unwanted toolbars
Website redirection
Unusual Sound Playing in the Background
Random Audio Advertisements
Fake Antivirus
Windows Tools don't open