Thanks Brink, I will try that. But wouldn't a hung app keep Windows sort of awake, and the monitor on?
With my situation, Windows appears to fully shutdown, and the monitor loses signal and goes into standby. just the power from the PSU continues to feed the mobo, fans, and LED's.
To me, it feels like a hardware issue, but I could be wrong and i'll definitely try it.
In addition, you might also check to make sure that you have all the latest drivers installed for your motherboard and devices if it is some hardware or driver issue causing it.
ziffel, you are not alone experiencing this type of problem.
I recently started having a Dell start waking itself up from a Sleep and a Hibernate state, when they were user instigated.
On a 'Sleep after 5 minutes' the pc will, after a few minutes, wake itself.
Even on a Shutdown, the pc turns itself on.
This wackiness started later in the day after switching out the HD for a SSD.
Still troubleshooting this one.
Thanks Brink, I will try that shortcut.
To me, the problem feels like a hardware issue. Windows seems to fully shutdown, the monitor goes into standby, and there's no obvious hung software. What seems to be happening is perhaps Windows isn't passing off the 'power off' command to the BIOS, maybe? Everything about the shutdown is normal except the motherboard stays powered. Fans and all LED's (and lights on the motherboard). All i can do then is force-power it off. It's definitely a weird issue, and not something I've encountered in all my years of building PC's.
I've googled this and others have had the same problem, with different motherboards and different versions of Windows.
I tried your shortcut and it worked the one time I used it. I'll keep trying it, and let you know if it eventually fails (or not).
The shortcut will at least help to rule out a possible hung app, but yeah it could be some sort of hardware or driver issue as well.
Sorry about basically double-posting above. I thought my 1st one didn't get sent, it apparently went to page 2 and I didn't notice.
As far as mobo drivers, I've been over those extensively, and everything seems to be up to date.
Update: the shutdown failed on the 2nd attempt using the provided shortcut, so I guess that rules out a hung application?
Yep.
You might see if the shutdown logs may reveal anything, but not sure it will if hardware related.
Read Shutdown Logs in Event Viewer in Windows Windows 10 Performance Maintenance Tutorials
If all else fails, you might consider a clean install.
I followed that guide and it didn't reveal anything of interest. No errors were reported by the OS and nothing really to differentiate a good shutdown from a bad one. This seems to further point to it being a hardware/bios issue.
BIOS revisions for my mobo
When I built the PC on May 6, the mobo shipped with the 1.10 bios installed. I updated to 2.00 which stopped serious issues I was having with system stability, including increasing the amount of voltage the CPU was getting. It stopped all my BSOD's and freezes.
However, I *think* this power-off issue also started then and it just occurred to me that, in thinking back, I don't think the power off issue happened until the 2.0 bios.
I'm wondering if I should try the 1.3 bios, which includes the CPU/voltage/etc fixes I need but isn't 2.0 which may be the source of the shutdown problem.
Thanks again for all your help.
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