Suspicious.MH690.A unable to remove

Hey

a little over a week ago i was unfortunotly infected with Suspicious.MH690.A now the first thing it did was to disable nortons ability to scan files and protect the pc so had to format my pc that i did now i have a problem my external hard drive is still infected and just reinstalled my windows installed norton antivirus and updated it.

So i took the chance pluged in the external hard drive tryed to scan it and it did find the virus but however does not seem to be able to remove it i could use some help here any sugestions are welcome i am beginning to get desperat have some verry importent work on the drive that i need for my work.

 

Best regards

Lars