It includes both the Windows and DOS PC diagnostics programs.Later versions of AMIDiag support UEFI, which allows diagnostics to be performed directly on the hardware components, without having to use operating system drivers or facilities.AMI supplies both DOS and Win32 firmware upgrade utilities for its own motherboards. AMIDiag is a family of PC diagnostic utilities sold to OEMs only.
On November 13, 1993, a number of PCs that used the AMIBIOS firmware started at boot-up to play the tune to Happy Birthday repeatedly while halting the computer until a key was pressed.
The problem was resolved with a Trojan-free firmware upgrade from most manufacturers.
The AMI Win BIOS was a 1994 update to AMIBIOS, with a graphical user interface setup screen that mimicked the appearance of Windows 3.1 and supported mouse navigation, unusual at the time.
The original AMI BIOS did not encrypt the machine startup password, which it stored in non-volatile RAM.
Therefore, any utility capable of reading a PC's NVRAM was able to read and to alter the password.