Possibly, you can see following detection of your antivirus software:

backdoor poison bqa fake detection

This is a reason to worry. But not about Backdoor.Poison.BQA (as you really don’t have it). But this in most cases mean that your antivirus software is fake and it can be fake Bitdefender 2011 or Antivirus 8 rogue.

To get rid of this alert you generally need to remove rogue antivirus you have. To do this use Bitdefender 2011 Removal Tool.

Download Removal Tool