I have never heard of songs.pk, and furthermore, I do not now nor have I ever downloaded music. I am a very basic and safe computer user. I do not download programs from just anywhere. I even quit my membership to Facebook. I do not use messengers. I have no idea where quobox is.
But irregardless of my lack of expertise and of what you have said, I know that Avast is messing up on my computer. Plain and simple.
After several hours away from the computer I came back to find everything frozen. I had to force a shutdown. After restart, my connection, volume, time and WinPatrol popped right up. My computer boots very quickly and loads pretty quickly too ... except for Avast. After it did finally load, 6 minutes, the icon started turning in a very jerky manner, stop-start, stop-start and then just stopped altogether. I thought I was going to have to force another shutdown but it FINALLY seems to have caught on ... for now anyway.
I run both Malwarebytes Pro and avast Internet Security. I also run the free version of SUPERAntiSpyware once every week or two. All are kept updated, as are my Windows Updates. You are probably not going to find anyone who is any more careful where they click and what they download than me. Take my word for that.
I think possibly I should be posting now in the regular forum because this situation doesn't deal with a virus or worm. It deals with something that has gone awry with an avast update or something along the way that is making avast not perform well for me. It needs to be fixed, certainly, but perhaps this is not the place to do it.
essexboy, if you have any further input, I would appreciate hearing from you.
I also want to add that I don't feel I have a lot of programs running at startup. See screenshot.