- Programs taking longer to load.
- Programs (such as MS Word or Outlook) crashing for no reason.
- The hard disk being accessed more often.
- Files that disappear for no reason and/or frequent file corruption.
- Devices that once worked now refusing to work even when no changes were made to the system configuration.
Of course, there are plenty of other causes of the above mentioned symptoms, ranging from hardware problems touser error, but they can indicate the presence of a virus infection.
One fairly simple way to determine if you have a virus or worm on your machine is to simply install one or more anti-virus products. It’s amazing how people people don’t do this, though. In fact, over half of all of the incident reports I receive from people are cases where they have not run any anti-virus software on their system. I highly recommend installing something on your machine, you can end up saving both of us a great deal of time that way.