how can i fix my hotpoint aquarius condenser tdc32 dryer?

hotpoint aquarius condenser tdc32 dryer was drying for about 15/20min,then it stopped with still 40min left,opened dryer drum hot,tried to re start drying again worked for 5min,stopped again,now it wont work,no matter how many times i push the on/off button nothing happening,what could it be,any help would be great??