A brief, low-key European tour was undertaken in June and July 1980, featuring a stripped-down set without the usual lengthy jams and solos. On 27 June, at a show in Nuremberg, Germany, the concert came to an abrupt halt in the middle of the third song, when Bonham collapsed onstage and was rushed to hospital. Speculation in the press suggested that his collapse had been the result of excessive alcohol and drug use, but the band claimed that he had simply overeaten.
A North American tour, the band's first since 1977, was scheduled to commence on 17 October 1980. On 24 September, Bonham was picked up by Led Zeppelin assistant Rex King to attend rehearsals at Bray Studios. During the journey, Bonham asked to stop for breakfast, where he downed four quadruple vodkas (from 16 to 24 US fl oz (470 to 710 ml)), with a ham roll. After taking a bite of the ham roll he said to his assistant, "breakfast". He continued to drink heavily after arriving at the studio. The rehearsals were halted late that evening and the band retired to Page's house—the Old Mill House in Clewer, Windsor.
After midnight, Bonham, who had fallen asleep, was taken to bed and placed on his side. At 1:45 pm the next day, Benji LeFevre (Led Zeppelin's new tour manager) and John Paul Jones found Bonham dead. The cause of death was asphyxiation from vomit; the finding was accidental death. An autopsy found no other recreational drugs in Bonham's body. Although he had recently begun to take Motival (a cocktail of the antipsychotic fluphenazine and the tricyclic antidepressant nortriptyline) to combat his anxiety, it is unclear if these substances interacted with the alcohol in his system. Bonham's remains were cremated and his ashes interred on 12 October 1980, at Rushock parish church, Worcestershire.