gsxr-boy03

My bikes Ecu fried one day so I had my friend take it to a mechanic of 30+ years aka his dad
Well when he picked my bike up for me he didn't put the strap on good so it fell over on the trailor. ( I herd the bike run before he brought it to me ) well he gets it to my house and I start it up go about 15 yards and the bike dies and will not start again any ideas.. my friends dad past away a few months ago on a bike and I never got to ask his dad what could be wrong with it. Please help I have not done anything to it yet its almost ridding weather so please help 2003 gsxr 600