Model: BIOS Portege M400
Category: BIOS Driver
Operating System: Windows XP (Note: might work with other versions of this os.)
ACPI Flash BIOS version 3.50
Change History Version 3.50 05-17-2007 The BIOS was updated due to Intels request. Version 3.40 03-15-2007 Optimized heat control in low temperatures. A maximum of 256MB of system memory will be used as a video RAM when the computer is configured with 1GB or more of system memory under Vista. A Display Driver update is also required. This BIOS supports both Windows XP and Vista. Version 3.30 02-14-2007 Ensured that digitizer will not work while the LCD lid is closed. HD Audio Verb Table incorporated WLP requirements. This BIOS supports Microsoft Windows XP and Vista. Version 3.20 01-02-2007 Corrected: The combination of a Vista-capable SYSTEM BIOS and non-BitLocker Boot Block no longer shows an exclamation ! mark for the TPM Device in Windows XP Device Manger. Modified the BIOS to be Windows Vista-capable. Corrected: The on-screen Owner String was partially missing in Notebook PC mode. Added: Intel requirements for Core2 Duo Improved stability when using Core2 Duo as a Single Core Processor. Version 2.10 12-06-2006 Incorporated Intel requirements for improved chipset stability. Version 2.00 12-05-2006 Added Yonah TJ85 CPU compliance. Version 1.80 10-20-2006 Applied the Napa Refresh changes for Merom CPUs Made changes to comply with Intel logo specifications. Version 1.70 08-22-2006 Incorporated Intel requirements to optimize chipset memory performance. Made a change to support up to the C3-State when Enhanced C-State is disabled. Version 1.60 08-10-2006 Added support for the Yonah-Celeron CPU. Version 1.50 06-24-2006 Added EvDO wireless WAN support. Version 1.40 05-09-2006 Corrected an issue where the system could hang when the power supply was turned on during a charge prohibited state of the Peak Shift Function. Version 1.30 03-29-2006 Incorporation of Intels chipset requirements. A change was made to automatically reset the hardware when a restart is performed on Windows XP retail platforms. A change was made to reduce power consumption when the Wireless LAN is disabled in Device Manager. A change was made to the HD Audio Verb Table for Windows Vista. Version 1.20 02-08-2006 Initial production BIOS for Portege M400 models.