Computer Repowers aftershut down....

[xyber98]

I've seen a few threads out there regarding a computer repowering on its own. My computer repowers after shut down, SOMETIMES. I had one power supply go bad on me, and just replaced it with a brand new 480 watt antec. Since the new power supply in two weeks it has repowered 2 times, better, but I suppose it wasn't the power supply. The "Wake-on" features in my BIOS have been disabled. Im at a loss here guys, changed the power supply and checked my bios settings and still have the issue lingering. My system specs are MSI-neo4 Platinum, Asus Geforce 6800GT, WD Raptor HDD, 2 gigs OCZ Platinum ram, Athlon x2-4200 dual core. The computer is plugged into a power strip surge protector, NOT A UPS. I was thinking, could it possibly be bad power? Anyone have any idea?? Please help!

 

[Bozo Galora]

It seems this is yet another booby trap for PC builders
However, make sure you dont have AMD cool n quiet running, nor nvidia firewall, or too low shutoff temp in bios.
Right click My Computer then click Properties > Hardware > Device Manager.
Expand the entry called Computer. (view hidden options)
See if your ACPI(s) listing says Multi

The players:
ACPI - which controls advanced config power interface (sleep hibernate etc.)
The BIOS and how its set (ACPI APIC)
The XP install and XP service pak
The CPU - single core or the X2 dual core

The prob is, many bios need an update or a patch for X2 core recognition
When you install XP, the O/S talks to bios and sees if ACPI is enabled, and which version (1.0, 2.0). You put your faith in XP to configure HAL correctly if you allow the F6 prompt for SCSI drivers to pass.
Until its recognized as dual core it may just install single core ACPI.
If you repeatedly press F5 at the F6 juncture (rapidly), you will get a choice (you may get a message XP cant determine computer type)
(you may have to scroll on this page)
* ACPI Multiprocessor PC
* ACPI Uniprocessor PC
* Advanced Configuration and Power Interface (ACPI) PC
* Compaq SystemPro Multiprocessor or 100% Compatible
* MPS Uniprocessor PC
* MPS Multiprocessor PC
* Standard PC
* Standard PC with C-Step i486
* Other

Obviously, you need ACPI multiprocessor PC

And its not safe to switch ACPI - HAL after install.

So:
Update BIOS first with floppy if needed
Enable latest ACPI in BIOS (and APIC)
Turn OFF PlugnPlay
Use XP with SP2 already in (slipstreamed)
Install with manual F5 selection of multi ACPI
Do not install any nforce chipset drivers
Set instant off in bios powermanagement.
Patch system for dual core fix immediately if needed
Do not enable fancy power management stuff in control panel/PM until you get things sorted out.

[More than you ever wanted to know about ACPI]
http://acpi.sourceforge.net/documentation/index.html
http://www.acmqueue.com/modules.php?name=Content&pa=showpage&pid=81&page=1

==============
XP Restarts after shutdown
Microsoft has added a feature to Windows XP that helps to fix errors when they arise. It is the auto-reboot feature. When Windows experiences an error, it will reboot itself in an effort to fix itself. However, there are many other factors that will create this behavior (damaged exit sound file; incorrectly configured, damaged, or incompatible hardware; conflicting programs, or an incompatible, damaged, or conflicting device drive) making it a very tricky problem to troubleshoot. Below, you will find many places on the Internet that have dedicated much time in helping you troubleshoot this issue.


Take a look at Microsoft's knowledgebase article for help:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q308029
Resources to Help Troubleshoot Shutdown Problems in Windows XP

For a complete Shutdown troubleshooting guide see:

http://www.aumha.org/a/shtdwnxp.htm

or

http://www.kellys-korner-xp.com/xp_abc.htm

then select "S" section then scroll down to the Shutdown area in the list.

 

[Ctrackstar126]

Originally posted by: Bozo Galora
It seems this is yet another booby trap for PC builders
However, make sure you dont have AMD cool n quiet running, nor nvidia firewall, or too low shutoff temp in bios.
Right click My Computer then click Properties > Hardware > Device Manager.
Expand the entry called Computer. (view hidden options)
See if your ACPI(s) listing says Multi

The players:
ACPI - which controls advanced config power interface (sleep hibernate etc.)
The BIOS and how its set (ACPI APIC)
The XP install and XP service pak
The CPU - single core or the X2 dual core

The prob is, many bios need an update or a patch for X2 core recognition
When you install XP, the O/S talks to bios and sees if ACPI is enabled, and which version (1.0, 2.0). You put your faith in XP to configure HAL correctly if you allow the F6 prompt for SCSI drivers to pass.
Until its recognized as dual core it may just install single core ACPI.
If you repeatedly press F5 at the F6 juncture (rapidly), you will get a choice (you may get a message XP cant determine computer type)
(you may have to scroll on this page)
* ACPI Multiprocessor PC
* ACPI Uniprocessor PC
* Advanced Configuration and Power Interface (ACPI) PC
* Compaq SystemPro Multiprocessor or 100% Compatible
* MPS Uniprocessor PC
* MPS Multiprocessor PC
* Standard PC
* Standard PC with C-Step i486
* Other

Obviously, you need ACPI multiprocessor PC

And its not safe to switch ACPI - HAL after install.

So:
Update BIOS first with floppy if needed
Enable latest ACPI in BIOS (and APIC)
Turn OFF PlugnPlay
Use XP with SP2 already in (slipstreamed)
Install with manual F5 selection of multi ACPI
Do not install any nforce chipset drivers
Set instant off in bios powermanagement.
Patch system for dual core fix immediately if needed
Do not enable fancy power management stuff in control panel/PM until you get things sorted out.

[More than you ever wanted to know about ACPI]
http://acpi.sourceforge.net/documentation/index.html
http://www.acmqueue.com/modules.php?name=Content&pa=showpage&pid=81&page=1

==============
XP Restarts after shutdown
Microsoft has added a feature to Windows XP that helps to fix errors when they arise. It is the auto-reboot feature. When Windows experiences an error, it will reboot itself in an effort to fix itself. However, there are many other factors that will create this behavior (damaged exit sound file; incorrectly configured, damaged, or incompatible hardware; conflicting programs, or an incompatible, damaged, or conflicting device drive) making it a very tricky problem to troubleshoot. Below, you will find many places on the Internet that have dedicated much time in helping you troubleshoot this issue.


Take a look at Microsoft's knowledgebase article for help:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q308029
Resources to Help Troubleshoot Shutdown Problems in Windows XP

For a complete Shutdown troubleshooting guide see:

http://www.aumha.org/a/shtdwnxp.htm

or

http://www.kellys-korner-xp.com/xp_abc.htm

then select "S" section then scroll down to the Shutdown area in the list.

From now on I am asking you any question I ever have. Thats got to be one of the most informative posts I ever saw.

 

[bowman]

I'm having a similar problem with my new computer. After shutting down via the XP start button the computer will restart- usually in less than a minute. It will remain shut down if I shut down using the power button.

My computer is an Alienware with Athlon 64X2 4800, MSI K8N Diamond Plus mobo, 2GB Patriot ram, Gigabyte GeForce 7900GTX, and Samsung HDD.

The problem started after I swapped out the original mobo, processor, memory, and graphics card. I'm a bit of a newbie so maybe I got in over my head. It seems to run fine except for the repowering issue, although I haven't tested it under a load.

I've tried several of the troubleshooting suggestions I've seen for this problem including: Turned off the XP auto-reboot feature, cleared the CMOS, made sure any wake-up devices are disabled, verified the ACPI listing is multiprocessor, disabled the Cool 'n' Quiet feature, verified all drivers are up to date, disabled NCQ in the nForce SATA controller properties, swapped the USB mouse and keyboard for a PS/2, and uninstalled the nVidia IDE driver. After uninstalling the nVidia driver the restart was delayed for a couple of extra minutes.
Any other suggestions would be greatly appreciated.