Norton Power Eraser is a free virus and malware removal tool from Symantec. It’s a very aggressive detection tool that traditional virus scanning could not remove. Norton Power Eraser can also be used for an initial cleanup if malware on an infected system prevents normal installation of your security software. The tool uses more aggressive techniques than your Norton security product, hence there is a risk that it will flag legitimate programs for removal. You should carefully review the scan results page before removing any files.
You should run Power Eraser only in emergency situations, such as when computers exhibit instability or have a persistent problem. Typically, you run Power Eraser on a single computer or small group of computers. You should not run other applications at the same time. In some cases, a regular scan event alerts you to run a Power Eraser analysis.