Norton Power Eraser - No risks found

My laptop is infected - per Microsoft Support

 

I have been experiencing an intermittent problem with my hard drive. 

 

The symptoms include a strange noise coming form the disk, and, at the same time, the system slows way down. 

 

My PC Doctor software fails a Targeted Read Test. 

 

I contacted Microsoft support to verify the status of my image backup copy in the event I would need it to restore the system to a new hard drive.

 

MS support took a look at the computer - and several locations in the registry - and determined that it is deeply infected?

 

I have NIS 2012 (Windows 7) installed and before that NIS 2011, 2010, 2009. 

 

I downloaded and ran Norton Power Eraser. No Risks [were] Found.

 

Does Norton have another tool to remove "deep infections"?