The Waikato District Health Board is calling in Audit New Zealand to review the recent computer failure in its hospitals.
The Conficker virus shut down more than three thousand of the board's computers for up to four days last week.
The DHB chairman Graeme Milne says the board spends about ten million dollars a year on IT systems and is disappointed the failure happened.
He says he wants to make sure it does not happen again.
All computers were back online by midday Monday, but staff still cannot use USB memory sticks or external hard-drives.
The review will begin in mid-January, with a report expected in February.
