Do you want to test if the antivirus you installed on your PC is working and effective? Here is a trick that can test it. Don't worry it contains no viruses or anything, just a block of codes. :)

1. Click on Start.
2. Select Run.
3. In the Open box type: notepad
4. Maximize the window.
5. Highlight the following on the following line of text:

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

6. Right click on the highlighted text and choose 'copy'.
7. Switch back to Notepad.
8. Right click anywhere inside of Notepad and select 'paste'.
9. Click the File menu and select 'save as'.
10. Change the 'Save as Type' to 'all files'.
11. Name the file http://kira-guide.blogspot.com or any name you want.

If your antivirus has detected it, then congratulations! Your PC is now safe from viruses. But if it didn't detect it, then I suggest you better change your antivirus. Quick!