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re: Dealing with Windows's Advanced Power Management (APM)'
Tuesday, March 5, 2002 at 1:53 pm Windows 98 Annoyances Discussion Forum
Posted by Ms. Eagle
(32276 messages posted)
Here's some info. I got from a Performance Site. Maybe this will help. It isn't for
any particular machine.
NECESSARY STEPS:
First enter your BIOS/CMOS Setup by pressing the appropriate key (usually Del) specified
in your computer/motherboard manual during the bootup POST (Power On Self Test) screen,
and DISABLE ALL (Advanced) Power Management (APM/ACPI) settings, like: "Doze Mode",
"Standby Mode", "Suspend Mode", "HDD Power Down", "Video Off" etc. Save your changes
and reboot.
After your Windows GUI comes up: open Control Panel -> Power Management -> select
the "Always on" Power scheme -> make sure the "Turn off monitor" and "Turn off hard
disks" boxes show "Never" -> click OK/Apply to save changes.
Edit your SYSTEM.INI file (found in your Windows folder) with Notepad or Sysedit
(but BACKUP IT UP FIRST!) -> go to the:
[boot] section -> look for the "power.drv" entry on the "drivers=" line -> move it
to a new line of its own starting with a semicolon (;) to disable it (example):
[boot]
drivers=mmsystem.dll whatever.vxd etc...
; power.drv
DO NOT remark/disable ANY other filenames on the "drivers=" line!
[386enh] section -> look for the "device=*vpowerd" line -> disable it by placing
a semicolon (;) in front of it (example):
[386enh]
; device=*vpowerd
Save your file.
BACKUP YOUR REGISTRY FILES: SYSTEM.DAT and USER.DAT!
Run Regedit:
Go to:
HKEY_LOCAL_MACHINE
and then to:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\VCOMM
Under each key above -> double-click on the "EnablePowerManagement" DWORD/Binary
(depending on your Win9x/ME release) value in the right hand pane -> change ALL characters
to read 0 (zero) -> click OK/press Enter.
Click Edit from the Regedit menu -> select Find -> start 3 separate Registry searches:
type "power.drv", "vpower" and "vpowr" respectively (no quotes) in the "Find what..."
box -> delete ALL found keys/entries.
Move to a safe BACKUP location these 2 files from C:\Windows\System: POWER.DRV and
VPOWERD.VXD.
Disable ANY Power Management entries from the System Agent (Task Scheduler) list.
Reboot.
Your Windows machine should perform significantly smoother from now on, without annoying
interruptions or intermittent errors. :)
***********************
Many parts of the system have power management components. To squeeze the most performance
from the system it needs to be disabled in two places the BIOS and the operating
system.
BIOS
During startup, most PC’s will flash a message similar to Press [CTRL-S] to enter
setup. Before you proceed you should print every screen to retain critical system
settings.
Every computer brand and model has a different BIOS and the exact details are slightly
different.
Disable all references to Power Management in the BIOS.
Operating System
1. Right click My Computer.
2. Click Properties.
3. Click Device Manager.
4. Double Click System Devices.
5. Double Click Advanced Power Management Support.
6. Click Disable in this profile.
7. Click Ok.
8. You must restart your computer before the new settings will take effect. Do you
want to restart your computer now? Click Yes.
*********************
PC Forest:
ACPI - Advanced Configuration and Power Interface.
APM - Advanced Power Management.
Options - BIOS Power Management Options.
Links - Power Management Links.
APM Settings
Disable APM in the BIOS and configure Windows to manage APM. For information about
how to disable APM in the BIOS, please contact the manufacturer of your computer.
To configure Windows to manage APM, follow these steps:
Click Start, point to Settings, and then click Control Panel.
Double-click the Power Management icon, select the settings you want for APM, and
then click OK.
*******************
Options - Setting Up Your BIOS' Power Management Options
Below, I've covered the basic options available these days. If you have an option
that isn't covered here, please let me know and I'll look into it. Note that I've
provided my recommended settings for a non-100% ACPI compliant Windows machine (using
APM 1.2). You may not have all these options, in which case you should read the explanations
for the correct settings. Also, if you have any information that you feel I've got
wrong here, please let me know and I'll rectify as necessary.
ACPI Option : No
Power Management : Disabled
PM Control By APM : Yes
Video Off Method : DPMS
Video Off After : N/A
MODEM Use IRQ : N/A
Doze Mode : Disabled
Standby Mode : Disabled
Suspend Mode : Disabled
HDD Power Down : Disabled
Throttle Duty Cycle : N/A
Reload Global Timer Events : Disabled
On Tuesday, March 5, 2002 at 1:13 pm, Kemm Blogg wrote:
>Thank-you, I will see what I can do here.
>
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