Unplug the appliance and take the top off.
Can you turn the drum fairly easily by hand?
Plug the machine in.
Keep yourself well clear of the wiring and electrical connections.
Start the appliance and give the drum a push round.
Does it start running?
The belt has snapped, can you advise on where I can purchase a new one.
Thanks for that.
Click here for the belt
Check that the drum turns easily and that's not jammed.
If the drum is ok and runs freely, replacing the belt should get the machine running again.
Hope this helps