Microsoft KB Archive/131425

= Windows NT Recognizes Only One Processor On HP XU 5/90C =

Article ID: 131425

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51

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This article was previously published under Q131425



SYMPTOMS
When you install Windows NT on a Hewlett-Packard Vectra XU 5/90C that has two processors, Windows NT Setup recognizes only one processor. Windows NT Setup identifies the computer as a Standard PC.



CAUSE
The HP XU 5/90C is using a BIOS version earlier than GO.05.08. Windows NT is unable to detect multiple processors on this system with earlier BIOS versions.



RESOLUTION
To correct this problem, upgrade the BIOS on the HP Vectra XU 5/90C to version GO.05.08 or later. The GO.05.08 BIOS upgrade is available for download from the HP bulletin board service (BBS) at (208) 344-1691, or from CompuServe in the HPSYS forum. Download GO0508US.EXE.



MORE INFORMATION
The Hewlett-Packard XU 5/90C uses a motherboard that contains a socket for a Pentium P54CM processor. When you add that chip, the system is upgraded to a dual-Pentium configuration.

When the updated BIOS is installed, Windows NT Setup correctly selects MPS 1.1 Multiprocessor PC, not Standard PC.

The HP products discussed here are manufactured by Hewlett-Packard, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: prodnt mps smp multiprocessor single 503 504 505 508 GO.05.03 GO.05.04 GO.05.05

Keywords: KB131425

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