What is a Computer virus symptoms?

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.

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

  • Your computer runs more slowly than normal
  • Your computer stops responding or locks up often
  • Your computer crashes and restarts every few minutes
  • Your computer restarts on its own and then fails to run normally
  • Applications on your computer don’t work correctly
  • Disks or disk drives are inaccessible
  • You can’t print correctly
  • You see unusual error messages
  • You see distorted menus and dialog boxes

Courtesy :- Microsoft Corporation