We have investigated autoionization, predissociation, and ion-pair formation from highly excited states of molecular hydrogen by using double-resonance excitation via the E, F 1(Sigma) g+, v equals 6 level. The energetic threshold for ion-pair formation occurs just below the H2+ X 2(Sigma) g+, v+ equals 9 ionization threshold. The spectrum in this region was studied by using conventional and constant-ionic-state photoelectron spectroscopy, by monitoring the H- production, and by detecting dissociation products by ionization with a third laser. The decay dynamics in this region are extremely rich, because the excited levels may decay by rotational and vibrational autoionization, by predissociation to neutral H + H* (n equals 2, 3, 4), by predissociation to the ion pair H+ + H-, and by fluorescence. In addition, the dissociative potential curve of the 2p(sigma) u3s(sigma) g 1(Sigma) u+ doubly excited electronic state crosses the H2+ X 2(Sigma) g+ potential curve in the same energy region, and the electronic autoionization of this state is found to significantly influence these decay processes.