Printable View
After reading online, I think I may have found out why my machine won't power off all the way when I shut down Windows. It turns out MS designed it by default not to. I read on a site, that I needed to go into the Registry Editor and find this value: PowerdownAfterShutdown and then change the 0 to a 1 in order for the machine to shut all the way down.
Why would MS design it this way?
Go to Control Panel>Power Options and see if you have an APM tab. If you do check the box for ACPI (it should be the only box in the tab), and your PC will power down all the way.
There is no APM tab. Will making this change in my registry finally make my machine power down all the way after XP shuts down?
Just a thought, have you checked to see if power management APM is turned on in your bios?
I'm noy 100% sure but I think that checking the box in the APM tab just puts that sme entry into the Registry. I really don't think it'll do any harm to try changing the value - but make sure you back up that key first (select it and go to Edit>Export), just in case.
I suspect though that you'll need to either enable it in the BIOS as dr.dos says, or upgrade the BIOS to support ACPI.
The BIOS does support ACPI. It's enabled. It's enabled in Device Manager. I'm attaching a file showing its entry in Device Manager.
In the Device Manager, click on ... View / Show Hidden Devices
Do you see anything that Is disabled?
Nope. I've gone over my Device Manager with a fine tooth comb. Nothing related to power is disabled or malfunctioning.
When I still had 98 on this machine, it powered off fine after Windows was shut down.
I checked my CMOS. APM isn't mentioned in it, just ACPI, which is enabled. It's enabled in both the BIOS and Windows.
If MS really designed XP to not power off a comp after being shut down, they're full of it.
I'm mystified as to why you don't have that APM tab - it should show if the BIOS is APM/ACPI compliant. Have you tried the Registry hack yet?
Why ?Quote:
Originally posted by f117nighthawk
If MS really designed XP to not power off a comp after being shut down, they're full of it.
For years many of us had to put up with turning our PC off once we got the screen saying "It is now safe to turn off your computer".
It's only one press of a button, not that hard.
Incidentally what do you get on your screen when you do click on shutdown ?
I did the registry hack. I haven't shut down my computer yet. When I would go to shut down my comp in the past after installing XP, it'd go through all the stuff of shutting down. Then it'd get to the screen where it says, "Windows is now shutting down" or something like that. Then I'd hear a soft click, like the ATX was trying to cut the power, but it'd just be frozen like that, and I'd have to use the master switch on the back to shut it off. Even using the front power button didn't shut it off.
Along the lines of Nix's post. That is a classic reaction when the ACPI is disabled in the BIOS [Setup]
*shakes head* I checked everything in my BIOS. It IS enabled. I may take my HD with me to CompUSA and see if I can get the problem diagnosed when I have them switch my mainboard over to the new box.
Did you find a solution?
Microsoft support link :)
http://support.microsoft.com/?kbid=810903
I enabled that value in the Registry. I don't know if I've found the solution yet because I haven't shut down my machine. I'll be shutting it down tonight to dismantle it though.
I've been over my CMOS with a fine tooth comb. All the ACPI stuff is enabled, and the machine is listed as an ACPI PC.
As for my Logitech mouse... I might need to update the driver, though I don't see how a mouse driver can keep a comp from powering off.
Strange about that AMP tab. On this comp. I am using now ACPI is enabled in both the BIOS and Windows but there is no APM tab!
However, it does NOT have the shutdown probelm. It powers off all the way.
Anyone knows why I don't have the APM tab????
That's just exactly how mine is except it doesn't power down all the way. What's the difference? Please don't tell me it's my Logitech drivers. I ask again, how a mouse can interfere with a computer powering down. It's just a mouse.
Do you have a Logitech MX 700 mouse?
When I got my P4 2.8 GHZ with Hyper-Threading Technology, the mouse cursor would freeze up every time I start the computer. I found that my Logitech MX 700 mouse was the cause of It. I found on the Dell forums that every one that had a P4 with Hyper-Threading Technology needed to plug the mouse Into a USB port to solve the problem.
Your AMD may have a problem with your mouse or other hardware.
No it's just an old Trackman Marble Wheel. It's in the USB port.
Re the APM tab appearing or not in control panel, see here. ACPI will be used over APM if it is available.
From the MS link given earlier:
from my own experiences.. Motherboard drivers can cause these sort of problems.. certainly if the bios is not complient with the implementation of the XP ACPI.. check if there is a BIOS update for the MoBo, as well check that the latest drivers are installed for the mobo..Quote:
This behavior may occur if one or more of the following conditions are true:
Your computer supports the Advanced Power Management (APM) feature, but the Advanced Configuration and Power Interface (ACP)-compliant basic input/output system (BIOS) is not configured correctly to permit the operating system to turn off the power supply.
During an upgrade of the operating system, Windows does not detect that the computer is ACPI-compliant.
An OEM device driver or service is installed on your computer that is preventing the computer from correctly shutting down.
Your computer is not ACPI-compliant.
If you did a UpGrade install to XP. I recall an issue on the MS knowledge base that had a common cause of the upgrade.. can't find the link just yet .. (personaly i prefer clean installs.. to many probs with upgrade)
Or have you by chance upgraded the mobo/CPU?
.. it is funny.. I had a similar problem with RH7.1.. same machine.. Win98 or Me.. fine.. BIOS....re-flashed..RH now fine..
Cheers
I have the latest BIOS. I flashed before wiping the HD and installing XP. The only driver for the mainboard I needed was the AGP slot driver for the Via SB.
Agh! I actually got it to power itself off after XP shuts down. But now I've moved everything over to a new case with a new power supply unit, and now it won't power down again. I have no idea what to do...
This has worked on a couple of machines I've seen:
"First get into device manager, then Go up and hit "view" then "show hidden devices". Now on the right look for "NT Apm/Legacy support". Under that should be "NT Apm/Legacy Interface Node". Enable that if it isn't."
Most machines don't have "NT Apm/Legacy support" so if it's not there, this isn't your problem.
*sighs* Not there. I've been through my Device Manager and CMOS with a fine tooth comb.