Operations in progress Please wait

Hi
I hope that you can help. I am new here and a silver surfer, so I may need things spelled out. Apologies!
I set up Acronis online bakcup yesterday and for 2 days, I've had the same message of my laptop. "Operations in progress....Please wait...do not turn off your pc"

I really need for this to stop now, even if the backup doesn't work. My laptop is going in for repair tomorrow and I need them to have access to it. At the moment I can not even get windows on my laptop, just this message.

Many thanks