I don't know how to do a picture of the screen. It only pops up occasionally, so it would be hard to catch and know when it will.
object: C:\Windows|Installer\{4bb69d65-5435-f19d-2ea3-c9fd629b}\U\80000032.~
Infection: Win32:download-PKU [Trj]
Action: blocked
Process: C:\Windows\System32\service.exe
It will come from there no matter what I open when it happens. The internet, my weather desktop, Microsoft Word, or even the games i play. It always happens and is completely random. When I scan with avast sometimes it shows up, sometimes it doesn't and it always says "delete" sucessful when I try to get rid of it, but its still there at times and no other software picks it up, but avast.