DOCUMENT:Q131425 13-FEB-2002 [winnt] TITLE :Windows NT Recognizes Only One Processor On HP XU 5/90C PRODUCT :Microsoft Windows NT PROD/VER::3.5,3.51 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation versions 3.5, 3.51 - Microsoft Windows NT Server versions 3.5, 3.51 ------------------------------------------------------------------------------- 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 : Technology : kbWinNTsearch kbWinNTWsearch kbWinNT351search kbWinNT350search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTSsearch kbWinNTS351 kbWinNTS350 kbWinNTS351search kbWinNTS350search Version : :3.5,3.51 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.