Norton Power Eraser results from 2 different OS

1. Why does Norton Power Eraser identify certain files such as privazer.dll and hidemyip.srv (and their associated registry entries) as "Bad" and recommended for removal on this config (A): [Intell Core 2 Duo P8700 2.53Ghz 4GB 32-bit Win 7 Pro] but indicates "No Risks Found" on this (B): [AMD A6-6310 APU w/AMD Radeon R4 1.8GHz 8GB 64-bit Win 8.1] ? Both OS using same license (2 seats used).  Both receive Norton updates automatically.

2. Option 1: Remove these files (and other associated files) from both PCs. Option 2: Remove files from (A) and keep them on (B). Option 3: Keep on both.