If this is the file you're referring to:
C:\Program Files (x86)\Common Files\Symantec Shared\EENGINE\EraserUtilDrv11312.sys
it's Norton's own file.
Any reason you were using Power Eraser ? It's a very powerful tool that can remove critical files.
If you believe you have an infection try running a Full Scan, and see if Norton picks anything up.