How can I know if my computer got a virus?

By cavsi Category: Computer Viruses Tags:

After you open and run an infected program or attachment on your computer, you might not realize that you’ve introduced a virus until you notice something isn’t quite right. Some computer viruses alert you to their presence by putting an unexpected message on your screen.

Here are a few primary indicators that your computer might be infected:

  • A sudden decline in PC or network performance. Your computer runs more slowly than normal.
  • Applications on your computer don’t work correctly. Programs taking longer to start or running more slowly than usual.
  • Unexplained decreases in the amount of available memory or system resources
  • A sudden reduction in disk space or loss of files or data.
  • Computer stops responding or locks up often
  • Computer crashes and restarts every few minutes
  • Computer restarts on its own and then fails to run normally
  • Disks or disk drives are inaccessible
  • You can’t print correctly
  • You see unusual error messages
  • You see distorted menus and dialog boxes
  • Playing a tune or displaying a message
  • Loss of partitions (organization of disc space)
  • Unauthorized release of files, usually via e-mail
  • Disk accesses seem excessive for simple tasks
  • Access lights turn on for non referenced devices
  • Programs or files mysteriously disappear
  • Executable files change size and unexplained hidden files appear

All of these symptoms are common signs that your computer has a virus, although they could also be caused by hardware or software problems that have nothing to do with a virus.

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