Pavilion All-in-One will not wake up.

[Rico2007]

I have the same problem with a brand new 24" AIO . Wake enabled keyboard, no sleep or power down options enabled and it still does it.  It just doesn't restart the display, everything else is working as I can see the lights on my external WD Passport HD flashing and my USB hub is powered.  If I switch off when I restart it goes through a DOS checksum routine and then starts up as normal.  This can't be right and given that the problem seems to have existed for some time, one wonders why units are still being shipped with this fault. It is, IMHO, lazy quality control. Anyone got a definitive fix on this?

[A4Apollo]

Hey there! @Rico2007, Thanks for stopping by the HP Support Forums!

Don't worry I'd like to help you out. Please answer a few questions below in order to assist you better.

Did you make any software or hardware changes to the PC?

Were there any recent windows update on the PC?

Please share the product number of the PC to assist you better.

Let's continue with the troubleshooting now.

Right-click on the Start Button to open the Power User menu. Select Device Manager.
You’ll see a list of categories for the devices connected to your PC. First, click the arrow next to Keyboards.
You’ll see one or more entries for your PC keyboard here. Double-click each one of them in turn, and select the Power Management tab. (If you don’t see this tab for a particular entry, move onto the next one.)
On each entry’s tab, make sure that Allow this device to wake the computer is checked.
Click OK, and your keyboard should now wake your PC from sleep.
Repeat these steps for the Mice and other pointing devices category if you’d like your mouse to wake your computer as well.

Try updating the BIOS and graphics driver on the PC using HP support assistant.

Refer this article to know more information about using the HP support assistant. Click Here

Lastly, change the sleep settings on the PC.

1. Click starts > settings > system

2. Left side menu click > Power and Sleep.

3. Scroll down click > Additional Power Settings.

4. Left menu. For each of these Click > 'Choose what the power buttons do' and Click > 'Choose what closing the lid does'. Make these changes [battery and plugged in]:

When I press the power button ~ Hibernate.

When I press the sleep button ~ Turn Off the Display.

Refer this article to further troubleshoot sleep or hibernate issues with the PC. Click Here

Let me know how it goes!

Have a great day ahead! 🙂

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

[Rico2007]

In answer to your series of questions I had done all of them, additionally I have turned off the Sleep mode for display and HD and the problem still occurs.

Yesterday I disabled sleep from the options of “What happens if I press the on/off”   thus leaving Restart of Close Down.

When I clicked on close down, the pc appeared to go off but in fact  still left the USB port live, leaving power to my USB hub and external HD.

When switching on today it started fine, but obviously now when I leave the pc it will not go to sleep , so the only way to save power is to switch off, not ideal

Summary

Screen Power set to always ON

HD Power set to always ON

ON/OFF Switch set to Restart or Shutdown

Wake enabled on keyboard and mouse ( both USB not wireless).

Shutting down completely eliminates the problem as there is no "wake up" required but in all of the years I have owned and built ( quite a few ) pc's I have never had one that I had to closedown completely because it wouldn't wake from "Sleep" . In truth this one doesn't do it every time but seems to occur if the "sleep" is prolonged.  

[A4Apollo]

@Rico2007, thanks for your quick response again.

Did you try updating the drivers on the PC using the HP support assistant?

Try the steps recommended below and check if it helps.

1. Select the “Start” button, then type “device“.
2. Open “Device Manager“.
3. Expand the “Network adapters” section.
4. Check under each of the options by right-clicking and selecting “Properties“.
5. Check the “Allow this device to wake the computer” box, then select “OK” for each network card.

Also, Open Start > Settings > Update & security > Troubleshoot 
Scroll down 
Click Power 
Click Run the Troubleshooter 

Hope this helps!

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

[Rico2007]

PC drivers and windows always up to date so it isn't the problem

In fairness that is not always the case with many people but I am a much more experienced user and do offer support via TeamViewer to my less tech savvy friends but this has me and man others it would seem totally stumped

I would have thought HP would have had this sorted by now given the age of the problem

I can underst and pc's developing idiosyncratic faults once users start adding their own software, devices and not remembering updates but straight out of the box is not on given these are brand name fairly expensive units

[A4Apollo]

@Rico2007, 

I understand your concern. As a last resort try performing a system recovery on the PC and check if it helps.

Refer this article to know more information about performing a system recovery on the PC. Click Here

Also, if you still have issues I suggest you contact HP support team so they can take remote of the PC and assist you further with this issue.

Please contact HP support for service options. Click Here

Have a blessed day ahead! 🙂

[Rico2007]

Update

Contacted HP support and and agent took control of my pc and deleted the graphics driver and downloaded and SP to renew. Wake up from sleep worked on a 5 minute period.   Then it worked on a 40 minutes period ( lunch )  but failed to wake up the display after a 90 minute period. I had put the pc tp sleep each time as opposed to auto sleep.  So sadly it persists 

[Rico2007]

UPDATE

Having tried the update this morning to no avail I decided to do more research on this issue. 

It is not uncommon and it is not confined to HP product. 

So given that info it made sense that it is probably linked to something more generic, but I am convinced it is a software problem.

So delving into the inner workings of this particular model I decided to look at any and all parts that have "power saving" settings.

I discovered the following

Device Manager

System Devices

Intel Management Engine Interface  

Has a power option to allow the pc to power down this device and it is enabled by default.

Now givne that I have integrated Intel graphics and the monitor is not waking was it possible that the pc was putting the graphics to sleep by closing down the IMEI  ?

I disabled the "Allow pc to turn off this device"  option and have run several sleep tests.

First one 

Sleep ( command not auto ) woke up perfectly after 5 minutes

Ok so nothing special  as it seemed to be doing that ok already

The real problem always manifest itself after a prolonged sleep

Second test   45 minutes sleep and woke on spacebar activation as one would expect.

Shutdown and restarted, everything running ok

Third test    1 Hour sleep and awaok as per normal again using spacebar

I intend to now put it to sleep until  9.30  ( 2 hours ) and see if it is ok, but thus far I am quietly confident

Let's hope that hasn't kinxed things

[Rico2007]

Today  12/02/2019

Left the pc in sleep mode all night and it woke with keyboard this morning.   Sllep mode on each occasion has been manually triggered I am now going to let it put itself to sleep and see if it still wakes up with keyboard.

[Rico2007]

PC has been left in "Auto" sleep mode three times during the day and awoke 2 / 3.  It was in fact the second sleep period that failed to wake up.  So not conclusively resolved but is definitely working better.  Now to try and find what made period 2 different.