how can i fix my OKI 3450?

my OKI 3450 has a warning sign on it, i spilt some of the toner in the machine because i was sent a faulty toner and now it just keeps flashing with the warning triangle ive tried trouble shooting and it cant find a problem, this printer has to be said not the best one ive bought however there must be a way to get it working again any ideas will be welcome!!