System security 2009 automatically installed

In my laptop virus alert wallpaper is displaying and System security 2009 automatically installed. System security 2009 showing that my laptop is infected with virus it ask me to scan after scan it showing many viruses. when i try to clean all virus it ask me to activate the system security 2009.

I am using Mcafee virus scan it has catched some Fake Trojan virus . Now macfee also infected onaccess scan has been disabled automatically.

Hi, aphanri.

Don't click any of the buttons on the warning -- not even the close with the X -- as it is programmed to install regardless of what you click. Use Task Manager to close the window instead.

This is in detection by MBAM. Following are instructions:

Please download Malwarebytes' Anti-Malware to your desktop.

• Double-click mbam-setup.exe and follow the prompts to install the program.
• At the end, be sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
• If an update is found, it will download and install the latest version.
• Once the program has loaded, be sure Quick scan is selected, then click Scan.
• When the scan is complete, click OK, then Show Results to view the results.
• Be sure that everything is checked, EXCEPT items in System Restore as shown in this sample:
  
• Click Remove Selected.