I have an AT-AO-10 board that doesn’t work with Windows 2000. I have reserved two IRQs for legacy devices (non plug and play) in BIOS. The AT-AO-10 has got assigned these IRQs, a DMA and a base address that are free, and there aren’t any hardware conflicts, but the board doesn't pass the MAX's text.
In Windows 'Information System', the board is shown in 'Forced hardware', but I don’t know that is a problem.
If the board is unplugged, error messages are the same.