Winger Will Jordan, who started on the bench in Wellington, has been named in the starting 15, as has centre Rieko Ioane who was demoted to the bench for the first Test and replaced by Anton Lienert-Brown, who now returns to the reserves.
Jordan replaces Sevu Reece on the right wing and Caleb Clarke comes in on the left wing for Mark Tele'a, who drops to the bench.
T.J. Perenara has been retained at halfback while former captain Sam Cane has been named on the bench.
Robertson might have tempted to make far more changes after the All Blacks were outplayed by the Pumas in Wellington. The tourists achieved only their third win over New Zealand in 42 Tests but all three have been achieved in the last four years.
Pumas players celebrate their thrilling eight-point win over New Zealand in Wellington. (AP PHOTO)
Argentina's forwards were more physical than the All Blacks in the first Test but Robertson has only tinkered with his pack, bringing in Tamaiti Williams because loosehead prop Ethan de Groot has a neck injury.
There were no scrums until the 60th minute in Wellington which made the New Zealand front row ineffective.
Ardie Savea retains the captaincy in the absence of Scott Barrett, who is recovering from a finger injury.
"We've reflected deeply on our performance and our preparation individually and collectively is something we have all owned," Robertson said.
"Our intent and focus has shifted solely to Eden Park."
The All Blacks have not lost in Auckland since 1994 but that record looks more under threat than ever.
NEW ZEALAND SQUAD:
Beauden Barrett, Will Jordan, Rieko Ioane, Jordie Barrett, Caleb Clarke, Damian McKenzie, T.J. Perenara, Ardie Savea (capt), Dalton Papali'i, Ethan Blackadder, Sam Darry, Tupou Vaa'i, Tyrel Lomax, Codie Taylor, Tamaiti Williams. Reserves: Asafo Aumua, Ofa Tu'ungafasi, Fletcher Newell, Josh Lord, Sam Cane, Cortez Ratima, Anton Lienert-Brown, Mark Tele'a.
