Started having trouble with my octavia a week ago, the starter motor gave in. replaced it then the next day the alternator belt snapped so replaced that now the car wont start,not sure if these 2 things were connected? tried replacing the battery but still it wont start. It tries to but won't fire up, can anyone help?

check your alternator load wire

How do I check that mate? I'm a bit clueless to be honest