EpmNewsDlg have a look in MSCONFIG to disable it from starting up. And/or Taskmanager to stop it. Or in control Panel - Administrative Tools - Services - and stop it running in there.
File Association: jpg "open-with" routine - on the rightclick menu click on 'Choose Program' (at the bottom) when you have chosen the program you want, tick the box for 'always use the selected program to open this kind of file'
As an extra note: I had problems last week with 'funny stuff' that disabled Avast GI and showing icon in Tray (although it still appeared to be running) and it was only after running Malwarebytes prog and free SAS - Super Anti Spyware and deleting all they found that I was able to return to normal. It seemed to be the FakeMS- Trojan that was causing the problems. I have no idea how it got onto my pc as I don't have MSE installed and it's something to do with that AFAIK. I did an Acronis restore finally as got fed up 'playing with it'.