How do I remove JS\Seeker.gen (Avast)?

Hello there this is my first time posting on here. The other day my mother's virus protection expired (McAfee - AOL free edition) so I had to install Avast for her. I ran a full scan using Avast and it detected a virus/ detection on her computer called JS\Seeker.gen that was in the file C:\Windows\Memory.dmp. It would not let me Quarantine, Repair or fix that file. I just ignored it for the time being hoping it was taken care of. Well I just ran another scan and the same detection came up and again it would not allow me to do anything with it. Should I just delete the file that is infected uming that is safe to do or go some other route? Any help would be greatly appreciated.