computer doesn't turn off

dboy

Golden Member
May 17, 2001
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I built a machine about a year ago (1GHZ tbird, FIC AD11 mobo). For almost that whole time now, it will not shut down automatically. When I use the shut down command, it either shuts down (past the "now safe to turn off your computer screen) but does not turn off, or it reboots. Just pressing the power button does nothing. Holding it for several seconds sometimes shuts it off, sometimes reboots it. So I usually use the switch on the UPS :) I'm running Win2K and have reinstalled it several times during the year, no change in behavior. I also tried installing win98 at one point; it did the same thing. I've replaced the PS, still no change. I'm guessing there's a mobo problem. Any ideas short of replacing it? Could I have something wired wrong?
 

LiLithTecH

Diamond Member
Jul 28, 2002
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Check to see if your PC is setup as a ACPI or Standard PC.
Start \ Settings \ Control Panel \ System \ Hardware \ Device Manager \ Computer

If it is Standard, you will need to reinstall Windows 2k over it self to set it up as ACPI.
ACPI is required to allow ATX PSU's to shut down properly.

If it is set as ACPI, check:
Start \ Settings \ Control Panel \ System \ Hardware \ Device Manager
under VIEW, check SHOW HIDDEN DEVICES
under NT/APM Legacy Interface Node, click enable.

 

mechBgon

Super Moderator<br>Elite Member
Oct 31, 1999
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Also, if Win2k is setting up as Standard PC, it's probably due to power-management settings in the BIOS not allowing it the ACPI option.
 

dboy

Golden Member
May 17, 2001
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It is set to ACPI. However, there is no NT/APM Legacy Interface Node listed, even after I showed hidden devices. Is that my problem? If so, how do I fix it?
 

LiLithTecH

Diamond Member
Jul 28, 2002
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If the BIOS is set to ACPI, you will not get the NT/APM Legacy.

If the BIOS is set to ACPI/APM, it would be available.

You do not need APM with ACPI enabled. It does more harm than good.

Browsing through the manual shows a setting for INSTANT-OFF in the BIOS
under Power Management Setup Soft-Off by PBTN. Choices are Delay 4 sec (default)
or Instant-Off.
 

dboy

Golden Member
May 17, 2001
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I checked the BIOS settings:

ACPI Enabled
ACPI setting of S3 (STR) [the other option is S1(POS) ]
power button set to instant off, not 4 second.