Any expert Pls?Boot.Tidserv Pls help?

I have reinstalled my computer due to virus.

I have also  do a factory default restored on the c drive.

It is running  fine now but Norton 360 found  Boot.Tidserv on my PC every time it start. Norton cannot remove it, I had tried the following but they were all useless. It can’t even detect where is the boot.tidserv. I had also turn off the system restore during the scan.

 

Removal Tool

 

 

Can any expert out there help pls??? Thanks