Virus - Constantly lowers my volume! Please help!

Hello,

this morning I found a strange sight on my home laptop screen!

A volume control poped up out of nowhere - it keeps my volume at 0% and automatically goes down when I try to increase the volume from the volume bar!

 

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I tried stopping whatever is causing this from the task manager, but to no avail. If I stop Windows audio from Administrative tools/Services the mystery volume bar dissapears!

Norton is currently running a full system scan but doesnt find anything :(

 

Please help me guys, I'm really lost :(