My computer won't shutdown!

[FluxCapacitor]

Ok, this is the first time I've ever seen or heard of this problem before, but I'm hoping someone else knows what is going on.

Here's the problem: When I goto "Shutdown" from Windows98 SE, my computer goes through it's normal shutdown routine, but then it proceeds to reboot! Also, I have my BIOS set to "Instant-off" for the power button on the case, and when I press the power button, it reboots also.

My first instinct is that it's a power supply problem, considering it does this both inside and outside of windows. My next guess would be motherboard, though I'm not sure how to go about testing that. I have tried removing the hard drives and booting from floppy, changing all the Power Saving settings (including turing them off), and other BIOS settings. Nothing has helped so far.

Here's a list of what parts this computer has in it. This is my "extra" computer, so that's why it seems kinda skimpy.

InWin Q500 tower (300W PS that came with it)
AOpen AX3SPro mobo w/newest BIOS
Celeron 566@850 (1.6V)
128MB RAM PC133 CAS2 (Memman Mosel Vitalic)
Maxtor 7GB and 2GB HD
NEC 8x CD-ROM
D-Link 10/100 LAN card
built in sound
built in 2D video
Voodoo2 for 3D (Diamond MonsterII)

Any help or thoughts would be greatly appreciated.

 

[Edgy]

Had similar prob on my brand new TB 800.

Could not turn power off, kept rebooting itself.
After a few repetitions of that, the computer wouldn't even register and just try to access all available drives, floppy, HD, DVD, CD, etc.
Only way to turn off is physically unplug or turn PS off on back of computer.

So, what happend?

In my opinion, it is PS prob. Before I could do anything about it, it fried my KT7 raid and fried my 800 TB.

Took it back to mom and pop store that assembled it and got new MB, new CPU, **NEW PS** with everything else same, and now it works perfectly.

Hope that helps

 

[FluxCapacitor]

Thanks for the post Edgy. I think I may just break down and get a new PS. Not worth the cost of shipping back a generic PS for a new one (mail ordered case)

 

[BT7990]

There is also a patch from MS for 98SE shutdown problems.
http://www.microsoft.com/windows98/downloads/contents/WURecommended/S_WUFeatured/Win98SE/Default.asp
Did you install it? Also try and disable fast shutdown as well to see if helps.

 

[GregMal]

First try turning off any "power management" options in the
BIOS and then also turn them off in the operating system.
Greg