Microsoft KB Archive/137402

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APM Features May Be Unavailable in Windows 95

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Q137402

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The information in this article applies to:


 * Microsoft Windows 95

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SYMPTOMS
After you install Windows 95, you may notice that none of the Advanced Power Management (APM) features were installed, or that there is no battery meter.

CAUSE
Some computers and BIOS revisions have known incompatibilities with the APM 1.1 specification. You may be running Windows 95 on such a computer.

RESOLUTION
Although the hardware suspend functions of your computer should still function correctly, you cannot use the Windows 95 APM features.

MORE INFORMATION
Different levels of APM are turned off by Windows 95 when it detects an incompatible BIOS.

Windows 95 turns off APM support completely on the following computers:

  AMIBIOS 07/08/94 AMIBIOS 07/08/1994 Wyse Forte GSV 486/66 Ultra laptop 486sx33 Zenon P5/90 DECpc LPv+ 1.00 DECpc LPv+ 1.01 DECpc LPv+ 1.02 AST Ascentia 900N any Gateway ColorBook with APM 1.0 any Gateway ColorBook >1.0 w/SystemSoft BIOS Canon Innova 150C NCR/AT&T 3150 NCR/AT&T 3150 Windows 95 turns off power status polling (so you do not see a battery meter) on the following computers:

  IBM ThinkPad 500 LexBook WinBook Windows 95 uses APM 1.0 mode on the following computers:

  NEC Versa and AT&T Globalyst with APM 1.1 BIOS and no   Plug and Play BIOS The following IBM ThinkPad computers support APM 1.1:

  ThinkPad 755C ThinkPad 360/355 Family ThinkPad 755CE/CD/CX/CV/CDV ThinkPad 340CSE ThinkPad 370C ThinkPad 701C ThinkPad 530CS The following IBM ThinkPad computers work with Windows 95, but only APM BIOS 1.0 is supported:

  ThinkPad 750 family ThinkPad 340 (monochrome) ThinkPad 230Cs For information about the differences between APM 1.0 and APM 1.1, please see the following article in the Microsoft Knowledge Base:

"Q119599 Differences Between Using APM 1.0 and APM 1.1" The ASUS PCI/I P55SP4 motherboard with a SiS 5511/5512/5513 chip set and an AWARD BIOS has been known to exhibit similar problems. The battery meter may appear on the taskbar when it should not.

ASUS states that this was fixed with Plug and Play BIOS version 0110 (11/21/95) for revision 1.2 and 1.3 motherboards. Revision 1.4 motherboards have this fix using Plug and Play BIOS version 0303 (11/21/95).

Please contact ASUS for information about BIOS updates.

Additional query words: pnp

Keywords : win95

Issue type :

Technology : kbWin95search kbWin95