If you have comprehensive knowledge of what actually you are doing, you can remove AntiVirus 2009 manually. If not, you should better buy a full and paid version of a reputed Anti Spyware program like Perfect Uninstaller, which will effectively clean your system.

Instrunctions on how to remove AntiVirus 2009 manually

Step 1: Delete the Windows Processes associated with it. For this you have to open the Windows Task Manager and open the Processes Tab and find the Processes associated with it. Learn how, click here.

Step 2: Delete the files associated with Power Anti Virus 2009. Before proceeding for this step, you should search for which files are associated with it. Learn how, click here.

Step 3: Delete the DLL files associated with it. Learn how, click here.

Step 4: Delete the registry keys. This is the most important step, which you need to execute with utmost care. Windows Registry is an important area of your system, and you should handle it extreme care. You should search for the exact Registry Keys associate with Power Anti Virus 2009 and then delete them.Learn how, click here.

Using Perfect Uninstaller.

Perfect Uninstaller has three levels of approaches to uninstall applications: Normal Uninstall, Force Uninstall and Special Uninstall. Even the most stubborn application can be uninstalled completely by Special Uninstall in safe mode. Learn how to get in safe mode, click here.