After you install Windows NT 4.0 Service Pack 4 on a Digital AlphaServer 2000, 2100, or 2100A computer that uses an EISA-based boot device with 32-bit Direct Memory Access (DMA) enabled, the computer may not start.
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or
the individual software update. For information on obtaining the
latest service pack, please go to:
For information on obtaining the individual software update, contact Microsoft
Product Support Services. For a complete list of Microsoft Product Support
Services phone numbers and information on support costs, please go to the
following address on the World Wide Web:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows NT 4.0 Service Pack 5.