Spam : Your system is in danger!

Bonjour, a tous....
Voila mon PROBLEME

J ai formater il y a peu mon ordi
Mais cette fois si de temps en temps sur le net
( avec FIREFOX ou cette M...E de CHROME )

un onglet ALERTE apparait

J AI effacer le fichier,scanner avec KAPERSKY

Mais le message revient a chaque fois avec un icone CHROME sur le bureau

Your system is in danger!

The consistency check has detected that one or more components have been modified.

Thereby Viruses, Trojan Horses, Backdoor programs, Spy-Ware, etc. could have sneaked into your System. Also costly dialer programs may have been installed.

Your system is exposed to the following risks:

Viruses and Worms spread either confidential documents on the Internet, delete your hard disk or damage your PC.
Trojan Horses and Backdoor programs give other people access to your PC and transmit confidential data, like passwords, banking/financial information, etc.
Dialer programs cause great costs for Internet access.
The danger of Viruses, Trojan Horses and Backdoor and Spy programs especially leads from the software piracy scene and is often found in Cracks of commercial programs. Nothing prevents a cracker from modifying the software to his advantage.
Therefore don't use illegal copies, but only offical licensed versions! Remember that all your activities on the Internet leave your IP-address. To be sure, install an unmodified version from www.cfos.de.
Support further development of your software!

Illegal copies could have triggered this alarm as well. You can read our opinion about this here.
But if you do like this software so much, why not go ahead and buy it now!

Ma question est la suivant :
1/ est ce bien un spam ???
2/ comment faire pour le retirer definitivement ( sans reformater svp )

Merci d avances pour toutes reponses
Merci a Comment Ca Marche
Bonne continuation
et Bonnes Fetes