When your system is infected, you could get the following symptoms:

By a typical virus


• The computer hangs frequently
  
• The size of execution files increases significantly
  
• The computer slows down especially if your memory resident program is infected.
  
• Unidentifiable error occurs when you run files.
  
• Your system logo may change.


By Macro virus


• The document does not open normally or is locked by a password.


• Unrecognizable characters or funny texts are shown in the document.
  
• Macro will not run in Tools menu.
  
• Error occurs when you use VB editor to see macro codes.
  
• Illegible message appears while you work on the document.
  
• VB editor starts in debug mode while you work with Excel or Word