From Newsgroup: alt.comp.os.windows-11

Se just got a new UHF monitor for my wife's Win11 desktop. I plugged
in the power cable, and the HDMI cable from the computer, and it
worked just fine.

A couple of days later, it showed -- black!! The taskbar on the bottom
was there and worked just fine. If I started a program from the
taskbar, it worked fine. But the rest of the desktop was entirely
black. Right-clicking it got no response. I've never seen this before
on any computer I've used. We finally rebooted the computer, and it
came up just fine. Does any body have any idea what might have caused
this?
--
Tim Slattery
timslattery <at> utexas <dot> edu
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On 5/18/2026 8:27 AM, Tim Slattery wrote:

Se just got a new UHF monitor for my wife's Win11 desktop. I plugged
in the power cable, and the HDMI cable from the computer, and it
worked just fine.

A couple of days later, it showed -- black!! The taskbar on the bottom
was there and worked just fine. If I started a program from the
taskbar, it worked fine. But the rest of the desktop was entirely
black. Right-clicking it got no response. I've never seen this before
on any computer I've used. We finally rebooted the computer, and it
came up just fine. Does any body have any idea what might have caused
this?

FWIW, I have seen this exact same thing on one of my desktops. It's
only a year old and when it happens I usually click on refresh and it relatively quickly works. I have a feeling it has something to do with loading my background images and the associated video driver. Just not
sure or of much help, I'm afraid.
--
Science Doesn’t Support Darwin. Scientists Do

--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On Mon, 18 May 2026 09:07:55 -0500, sticks <wolverine01@charter.net>
wrote:

FWIW, I have seen this exact same thing on one of my desktops. It's
only a year old and when it happens I usually click on refresh and it >relatively quickly works. I have a feeling it has something to do with >loading my background images and the associated video driver. Just not
sure or of much help, I'm afraid.

I have a different problem - I have 2 monitors, 1 28" the other 27".
Not sure if that's relevant to the current problem.

My problem is that one of my desktop icons seems to have disappeared
off the side of the screen and I'm unable to access it (which I'd like
to do as while the icon is still on my taskbar at the bottom of the
page, nothing comes up when I click on it so I can't execute the
program though it always comes up as open when I reboot.

It's a favorite program so I'm getting increasingly anxious and would
very much appreciate any tips. TIA...
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On Mon, 5/18/2026 9:27 AM, Tim Slattery wrote:

Se just got a new UHF monitor for my wife's Win11 desktop. I plugged
in the power cable, and the HDMI cable from the computer, and it
worked just fine.

A couple of days later, it showed -- black!! The taskbar on the bottom
was there and worked just fine. If I started a program from the
taskbar, it worked fine. But the rest of the desktop was entirely
black. Right-clicking it got no response. I've never seen this before
on any computer I've used. We finally rebooted the computer, and it
came up just fine. Does any body have any idea what might have caused
this?

In Settings wheel, type "relia" in the search box at the
top, which brings up the reliability monitor.

Check for failures logged on various days. A day with a red mark,
might be a significant event.

It takes a while to build up a good log of what is going on.
While the eventvwr.msc can be used right away, that's a lot more clumsy
for log-sifting.

*******

Copilot offers this:

***************** CoPilot Answer *********************************************

"Here’s the short version first:

If the taskbar works, app windows draw normally, but the desktop background
is black and right-clicking the desktop does nothing, then the desktop portion
of Explorer.exe has failed while the taskbar portion is still running.

This is a known Windows 10/11 failure mode because Explorer.exe is actually
two different UI subsystems in one process.

## What’s actually happening

### **1. The desktop is not drawn by DWM**
DWM only composites windows.
The *desktop surface* (wallpaper, icons, right‑click menu) is drawn by:

- **Explorer.exe --> "Progman" / "WorkerW" windows**
- Shell extensions that populate the desktop context menu
- The wallpaper service

If that part of Explorer crashes or deadlocks, you get:

- Black desktop
- No icons
- No right-click menu
- But taskbar still works
- And application windows still draw normally

This matches your symptoms exactly.

## Why Explorer can partially fail

Explorer.exe is a single process, but internally it hosts multiple components:

| Component | Responsible for | Can fail independently? |
|------------------------------------|----------------------------------------|-------------------------|
| **Taskbar / Start menu host** | Taskbar, Start, system tray | Yes |
| **Desktop host (Progman/WorkerW)** | Wallpaper, icons, desktop context menu | Yes |
| **Shell extensions** | Right-click handlers, icon overlays | Yes |
| **File Explorer windows** | Folder browsing | Yes |

If the **desktop host thread** crashes or hangs, Explorer does *not* always terminate the whole process.
The taskbar thread can continue running normally.

This is why you can still launch apps.

## Most common causes

### **1. A shell extension crash**
This is the #1 cause.

A third‑party shell extension (context menu handler, cloud-sync overlay, archive tool, etc.)
can crash the desktop host thread.

Symptoms:

- Right-click on desktop does nothing
- Right-click inside File Explorer still works
- Desktop goes black or stops updating

### **2. Wallpaper service failure**
If the wallpaper subsystem fails, Windows falls back to a black background. Combined with a shell crash, it looks like the entire desktop disappeared.

### **3. Explorer.exe desktop window destroyed**
Sometimes the WorkerW window that hosts the desktop simply fails to initialize.

### **4. GPU driver reset at the wrong moment**
This does *not* break DWM, but it can cause Explorer’s desktop host to lose its rendering surface.
DWM continues to draw windows normally, which matches your observation.

## Why it’s *not* DWM

If DWM had failed, you would see:

- All windows stop drawing
- No transparency
- No animations
- Taskbar glitches
- Possibly a fallback to "Basic" mode (Win7 behavior)

You explicitly said:

- Taskbar works
- App windows draw normally
- Only the desktop is black and unresponsive

That rules out DWM.

## How to confirm it’s Explorer’s desktop host

You can verify this with one quick test:

### **Press Win+R --> type: `explorer.exe /restart`**

If the desktop instantly reappears, then the desktop host thread had crashed.

You can also check in Task Manager:

- Open **Task Manager --> Details tab**
- Right‑click **explorer.exe --> Create dump file**
- Inspect the dump for a hung thread in a shell extension DLL
(common offenders: cloud sync clients, archive tools, GPU utilities)

***************** END: CoPilot Answer *********************************************

Now, if I'd asked the LLM-AI how the screen works, I would *never*
have received this level of detail. Priming the pump on these
suckers, is all important to getting the right details. You never
know what you might learn by accident. I didn't know File Explorer
could limp along like that, without tipping over.

Paul
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On 5/18/2026 1:34 PM, Paul wrote:

On Mon, 5/18/2026 9:27 AM, Tim Slattery wrote:

Se just got a new UHF monitor for my wife's Win11 desktop. I plugged
in the power cable, and the HDMI cable from the computer, and it
worked just fine.

A couple of days later, it showed -- black!! The taskbar on the bottom
was there and worked just fine. If I started a program from the
taskbar, it worked fine. But the rest of the desktop was entirely
black. Right-clicking it got no response. I've never seen this before
on any computer I've used. We finally rebooted the computer, and it
came up just fine. Does any body have any idea what might have caused
this?

In Settings wheel, type "relia" in the search box at the
top, which brings up the reliability monitor.

Check for failures logged on various days. A day with a red mark,
might be a significant event.

It takes a while to build up a good log of what is going on.
While the eventvwr.msc can be used right away, that's a lot more clumsy
for log-sifting.

*******

Copilot offers this:

***************** CoPilot Answer *********************************************

"Here’s the short version first:

If the taskbar works, app windows draw normally, but the desktop background
is black and right-clicking the desktop does nothing, then the desktop portion
of Explorer.exe has failed while the taskbar portion is still running.

This is a known Windows 10/11 failure mode because Explorer.exe is actually
two different UI subsystems in one process.

## What’s actually happening

### **1. The desktop is not drawn by DWM**
DWM only composites windows.
The *desktop surface* (wallpaper, icons, right‑click menu) is drawn by:

- **Explorer.exe --> "Progman" / "WorkerW" windows**
- Shell extensions that populate the desktop context menu
- The wallpaper service

If that part of Explorer crashes or deadlocks, you get:

- Black desktop
- No icons
- No right-click menu
- But taskbar still works
- And application windows still draw normally

This matches your symptoms exactly.

## Why Explorer can partially fail

Explorer.exe is a single process, but internally it hosts multiple components:

| Component | Responsible for | Can fail independently? |
|------------------------------------|----------------------------------------|-------------------------|
| **Taskbar / Start menu host** | Taskbar, Start, system tray | Yes |
| **Desktop host (Progman/WorkerW)** | Wallpaper, icons, desktop context menu | Yes |
| **Shell extensions** | Right-click handlers, icon overlays | Yes |
| **File Explorer windows** | Folder browsing | Yes |

If the **desktop host thread** crashes or hangs, Explorer does *not* always terminate the whole process.
The taskbar thread can continue running normally.

This is why you can still launch apps.

## Most common causes

### **1. A shell extension crash**
This is the #1 cause.

A third‑party shell extension (context menu handler, cloud-sync overlay, archive tool, etc.)
can crash the desktop host thread.

Symptoms:

- Right-click on desktop does nothing
- Right-click inside File Explorer still works
- Desktop goes black or stops updating

### **2. Wallpaper service failure**
If the wallpaper subsystem fails, Windows falls back to a black background. Combined with a shell crash, it looks like the entire desktop disappeared.

### **3. Explorer.exe desktop window destroyed**
Sometimes the WorkerW window that hosts the desktop simply fails to initialize.

### **4. GPU driver reset at the wrong moment**
This does *not* break DWM, but it can cause Explorer’s desktop host to lose its rendering surface.
DWM continues to draw windows normally, which matches your observation.

## Why it’s *not* DWM

If DWM had failed, you would see:

- All windows stop drawing
- No transparency
- No animations
- Taskbar glitches
- Possibly a fallback to "Basic" mode (Win7 behavior)

You explicitly said:

- Taskbar works
- App windows draw normally
- Only the desktop is black and unresponsive

That rules out DWM.

## How to confirm it’s Explorer’s desktop host

You can verify this with one quick test:

### **Press Win+R --> type: `explorer.exe /restart`**

If the desktop instantly reappears, then the desktop host thread had crashed.

You can also check in Task Manager:

- Open **Task Manager --> Details tab**
- Right‑click **explorer.exe --> Create dump file**
- Inspect the dump for a hung thread in a shell extension DLL
(common offenders: cloud sync clients, archive tools, GPU utilities)

***************** END: CoPilot Answer *********************************************

Now, if I'd asked the LLM-AI how the screen works, I would *never*
have received this level of detail. Priming the pump on these
suckers, is all important to getting the right details. You never
know what you might learn by accident. I didn't know File Explorer
could limp along like that, without tipping over.

and in my case, simply right clicking on the desktop and selecting
refresh restores it back to health, apparently.
--
Science Doesn’t Support Darwin. Scientists Do

--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On 5/18/2026 1:22 PM, The Horny Goat wrote:

On Mon, 18 May 2026 09:07:55 -0500, sticks <wolverine01@charter.net>
wrote:

FWIW, I have seen this exact same thing on one of my desktops. It's
only a year old and when it happens I usually click on refresh and it
relatively quickly works. I have a feeling it has something to do with
loading my background images and the associated video driver. Just not
sure or of much help, I'm afraid.

I have a different problem - I have 2 monitors, 1 28" the other 27".
Not sure if that's relevant to the current problem.

My problem is that one of my desktop icons seems to have disappeared
off the side of the screen and I'm unable to access it (which I'd like
to do as while the icon is still on my taskbar at the bottom of the
page, nothing comes up when I click on it so I can't execute the
program though it always comes up as open when I reboot.

It's a favorite program so I'm getting increasingly anxious and would
very much appreciate any tips. TIA...

I use the split screen all the time, and you should be able to use it to regain control of the window.

First, click on the off-screen program's icon in the taskbar.
Next, press the windows key + either left or right arrow.

You should see it now.
--
Science Doesn’t Support Darwin. Scientists Do

--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On 18/05/2026 11:27 pm, Tim Slattery wrote:

Se just got a new UHF monitor for my wife's Win11 desktop. I plugged
in the power cable, and the HDMI cable from the computer, and it
worked just fine.

A couple of days later, it showed -- black!! The taskbar on the bottom
was there and worked just fine. If I started a program from the
taskbar, it worked fine. But the rest of the desktop was entirely
black. Right-clicking it got no response. I've never seen this before
on any computer I've used. We finally rebooted the computer, and it
came up just fine. Does any body have any idea what might have caused
this?

A couple of months ago, after a Win-11 update (I think), my Desktop went
Black ... just the Icons that I had copied to the Desktop still show up now.

Still works a treat ... and I guess all those coloured spots on the
Display aren't getting worn out!! ;-)
--
Daniel70
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

sticks <wolverine01@charter.net> wrote:

Now, if I'd asked the LLM-AI how the screen works, I would *never*
have received this level of detail. Priming the pump on these
suckers, is all important to getting the right details. You never
know what you might learn by accident. I didn't know File Explorer
could limp along like that, without tipping over.

and in my case, simply right clicking on the desktop and selecting
refresh restores it back to health, apparently.

Yeah, but when I right-click the desktop, I get nothing at all, no
menu, no response at all. Where else could I find the "Refresh"
command?
--
Tim Slattery
timslattery <at> utexas <dot> edu
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On 2026-05-19 14:23, Tim Slattery wrote:

sticks <wolverine01@charter.net> wrote:

Now, if I'd asked the LLM-AI how the screen works, I would *never*
have received this level of detail. Priming the pump on these
suckers, is all important to getting the right details. You never
know what you might learn by accident. I didn't know File Explorer
could limp along like that, without tipping over.

and in my case, simply right clicking on the desktop and selecting
refresh restores it back to health, apparently.

Yeah, but when I right-click the desktop, I get nothing at all, no
menu, no response at all. Where else could I find the "Refresh"
command?

I've not had this problem so I'm guessing here: Click on Desktop
background, press <F5>.
--

Fake news kills!

I may be contacted via the contact address given on my website: www.macfh.co.uk

--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

Java Jive <java@evij.com.invalid> wrote:

Yeah, but when I right-click the desktop, I get nothing at all, no
menu, no response at all. Where else could I find the "Refresh"
command?

I've not had this problem so I'm guessing here: Click on Desktop >background, press <F5>.

Thanks! I greatly appreciate all the feedback on this question. Oddly
enough, the problem has not appeared for a couple of days now. We hope
it won't come back.
--
Tim Slattery
timslattery <at> utexas <dot> edu
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On 5/20/2026 8:28 AM, Tim Slattery wrote:

Java Jive <java@evij.com.invalid> wrote:

Yeah, but when I right-click the desktop, I get nothing at all, no
menu, no response at all. Where else could I find the "Refresh"
command?

I've not had this problem so I'm guessing here: Click on Desktop
background, press <F5>.

Thanks! I greatly appreciate all the feedback on this question. Oddly
enough, the problem has not appeared for a couple of days now. We hope
it won't come back.

That's how it is for me, too. I can go weeks without it happening, and
then one day I wake the system and the desktop is black. Never happens
during regular use, only when waking up.
--
Science Doesn’t Support Darwin. Scientists Do

--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

sticks <wolverine01@charter.net> wrote:

### **Press Win+R --> type: `explorer.exe /restart`**

OK, the screen just went black again - except for the taskbar.
Right-clicking on the black part of the screen has no elfect, so
choosing "Refresh" from a right-click menu is a nonstarter. I tytpes
WIn+R and got the command line typing explorer.exe /restart (and
carriage return) also had NO effect. So we're back to rebooting the
machine to fix this problem.

Any other suggestions?
--
Tim Slattery
timslattery <at> utexas <dot> edu
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On 5/21/2026 5:10 PM, Tim Slattery wrote:

sticks <wolverine01@charter.net> wrote:

### **Press Win+R --> type: `explorer.exe /restart`**

OK, the screen just went black again - except for the taskbar.
Right-clicking on the black part of the screen has no elfect, so
choosing "Refresh" from a right-click menu is a nonstarter. I tytpes
WIn+R and got the command line typing explorer.exe /restart (and
carriage return) also had NO effect. So we're back to rebooting the
machine to fix this problem.

Any other suggestions?

I would probably check for a newer video driver first.
--
Science Doesn’t Support Darwin. Scientists Do

--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On 2026-05-21 23:10, Tim Slattery wrote:

sticks <wolverine01@charter.net> wrote:

### **Press Win+R --> type: `explorer.exe /restart`**

OK, the screen just went black again - except for the taskbar.
Right-clicking on the black part of the screen has no elfect, so
choosing "Refresh" from a right-click menu is a nonstarter. I tytpes
WIn+R and got the command line typing explorer.exe /restart (and
carriage return) also had NO effect. So we're back to rebooting the
machine to fix this problem.

Any other suggestions?

Did you try my suggestion, which doesn't rely on menus (however it does
rely on accelerator keys, so may not work either):
Left click on Desktop background;
Press <F5>.
--

Fake news kills!

I may be contacted via the contact address given on my website: www.macfh.co.uk

--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On Thu, 21 May 2026 18:10:10 -0400, Tim Slattery
<TimSlattery@utexas.edu> wrote:

sticks <wolverine01@charter.net> wrote:

### **Press Win+R --> type: `explorer.exe /restart`**

OK, the screen just went black again - except for the taskbar.
Right-clicking on the black part of the screen has no elfect, so
choosing "Refresh" from a right-click menu is a nonstarter. I tytpes
WIn+R and got the command line typing explorer.exe /restart (and
carriage return) also had NO effect. So we're back to rebooting the
machine to fix this problem.

Any other suggestions?

Loose video cable? At either end? Some pins making intermittent
contact, perhaps?

My sister had an issue where her printer only sometimes worked. She
couldn't figure out what was wrong. After fetching me for a
professional, but entirely unpaid, consultation, I looked at the
cabling. The ancient multi-pin printer cable was only half connected.

Connecting it fully fixed the issue.

Yes, I showed her the before and after the fix statuses.

J.
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

On Mon, 18 May 2026 09:07:55 -0500, sticks <wolverine01@charter.net>
wrote:

FWIW, I have seen this exact same thing on one of my desktops. It's
only a year old and when it happens I usually click on refresh and it >relatively quickly works. I have a feeling it has something to do with >loading my background images and the associated video driver. Just not
sure or of much help, I'm afraid.

I formerly had two 27" monitors and one died on me and we replaced it
with a 28". (Nothing particularly unusual - they're both mid-range
monitors for that size)

Since there I have two weirdnesses - (1) a small program called
"Simple Sudoku" appears to be off the monitor but still running - and
restarts on every reboot but still off screen (2) Skyrim ONLY wants to
run on monitor 2 which is arms length off (literally) off to my right
and which I've got at a 30 degree angle to other other monitor - which
is the one I'd prefer to play it on.

On #1 I'm wondering if Win 11 has put it onto a different virtual
machine (and I don't know how to go there from the desktop to verify
or disprove the theory), #2 is just hard on my neck given the layout
of my desk (to provide a cleaner environment than under my desk I have
the tower on my desk between the two monitors and with everything
plugged into the front with a cheap USB connector on top to give me
more connections (mostly a medical device powered by USB unrelated to
the computer).

But #1 is the important one as it's a favorite program that judging by
the bottom Win11 taskbar APPEARS to be running even though I've
rebooted the machine dozens of time since I got the new monitor.

Things to try would be welcome from you guys - none of us know
everything but collectively this group seems to know quite a lot!
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

The Horny Goat wrote:

a small program called
"Simple Sudoku" appears to be off the monitor but still running

use the alt-space, m, arrows method to move it?
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: alt.comp.os.windows-11

Andy Burns wrote:

use the alt-space, m, arrows method to move it?

Of course you need it to have focus first, so either alt-tab or make
sure nothing else is running ...

--- Synchronet 3.21d-Linux NewsLink 1.2