Abnormal boiling point of a compound is due to

Inter molecular hydrogen bonding increases the boiling point but there is no effect of intramolecular hydrogen bonding on the boilingpoint.Since, B.Pt is the energy (heat) required to break the inter molecular attractions [H-bonding between the two molecules] and convert group of molecules into individual molecules, where as in the case of intramolecular H-bonding not necessary to break this bond. So intramolecular H-bond donot effect the B.Pt