My Win 10 laptop has recently (last few days) started popping up a large black dialogue box over the left hand half of the screen
https://i.postimg.cc/rsVPTmGc/Image1.png
It happens while I am using other program, sometimes while I am not even touching the keyboard (so it's not a random combination of keys that is causing it).
I have Classic Shell installed but that is still working normally. The dialogue that is popping up is not the native Win 10 one which (with
Classic Shell) you can access by Shift-clicking on the Start button.
Any suggestion what the intrusive program is, and a way of disabling it.
It is modal, in that while it is displayed, you cannot interact with any other open app or any shortcuts on the task bar or Quick Launch bar, so
it is Bloody Annoying...
My Win 10 laptop has recently (last few days) started popping up a large black dialogue box over the left hand half of the screen
https://i.postimg.cc/rsVPTmGc/Image1.png
It happens while I am using other program, sometimes while I am not even touching the keyboard (so it's not a random combination of keys that is causing it).
I have Classic Shell installed but that is still working normally. The dialogue that is popping up is not the native Win 10 one which (with Classic Shell) you can access by Shift-clicking on the Start button.
Any suggestion what the intrusive program is, and a way of disabling it. It is modal, in that while it is displayed, you cannot interact with any other open app or any shortcuts on the task bar or Quick Launch bar, so it is Bloody Annoying...
On Mon, 4/20/2026 12:00 PM, NY wrote:
My Win 10 laptop has recently (last few days) started popping up a large black dialogue box over the left hand half of the screen
https://i.postimg.cc/rsVPTmGc/Image1.png
It happens while I am using other program, sometimes while I am not even touching the keyboard (so it's not a random combination of keys that is causing it).
I have Classic Shell installed but that is still working normally. The dialogue that is popping up is not the native Win 10 one which (with Classic Shell) you can access by Shift-clicking on the Start button.
Any suggestion what the intrusive program is, and a way of disabling it. It is modal, in that while it is displayed, you cannot interact with any other open app or any shortcuts on the task bar or Quick Launch bar, so it is Bloody Annoying...
It bears some resemblance to the decorations on the Search box. I'm going
by the "all apps documents web more" at the top, and the silly Reward icon
on the right.
https://www.pcmag.com/how-to/find-things-faster-how-to-search-in-windows
On 20/04/2026 17:42, Paul wrote:
On Mon, 4/20/2026 12:00 PM, NY wrote:
My Win 10 laptop has recently (last few days) started popping up a large black dialogue box over the left hand half of the screen
https://i.postimg.cc/rsVPTmGc/Image1.png
It happens while I am using other program, sometimes while I am not even touching the keyboard (so it's not a random combination of keys that is causing it).
I have Classic Shell installed but that is still working normally. The dialogue that is popping up is not the native Win 10 one which (with Classic Shell) you can access by Shift-clicking on the Start button.
Any suggestion what the intrusive program is, and a way of disabling it. It is modal, in that while it is displayed, you cannot interact with any other open app or any shortcuts on the task bar or Quick Launch bar, so it is Bloody Annoying...
It bears some resemblance to the decorations on the Search box. I'm going
by the "all apps documents web more" at the top, and the silly Reward icon >> on the right.
ÿÿÿ https://www.pcmag.com/how-to/find-things-faster-how-to-search-in-windows
There's a three-dots icon at the top RHS of the popup window and it brings up a screen relating to searching where you can configure what it searches but not turn it off.
I went into services.msc and stopped the Windows Search service (to see whether it made any difference, prior to preventing it starting on reboot). Lo and behold, as I was typing this reply, the window opened, though now it's only half height. I've confirmed in services.msc that it had not restarted itself.
So it looks as if its something else.
The window now seems to close itself spontaneously after a few seconds, and it no longer modal.
There is a three-finger-tap on the Touchpad mentioned here.
https://support.microsoft.com/en-us/windows/prevent-windows-search-from-randomly-launching-cf350644-078c-4059-98f5-3cf725b89b22
Is there a switch where you can switch off Classic Shell for one boot cycle, to test ?
And now that it is no longer modal, open Task Manager when it appears,
and wave your mouse over the pane of the thing, then see if the %CPU
on some item increases in response.
My Win 10 laptop has recently (last few days) started popping up a large black dialogue box over the left hand half of the screen
https://i.postimg.cc/rsVPTmGc/Image1.png
It happens while I am using other program, sometimes while I am not even touching the keyboard (so it's not a random combination of keys that is causing it).
I have Classic Shell installed but that is still working normally. The dialogue that is popping up is not the native Win 10 one which (with
Classic Shell) you can access by Shift-clicking on the Start button.
Any suggestion what the intrusive program is, and a way of disabling it.
It is modal, in that while it is displayed, you cannot interact with any other open app or any shortcuts on the task bar or Quick Launch bar, so
it is Bloody Annoying...
Use SysInternals' Process Explorer (PE) to determine what process owns
(has a handle) to the enigmatic window. In PE's toolbar is a sniper cross-hair icon. Click on it, and then click on the window. PE will highlight the process that owns that window.
https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer
My guess is what you're seeing is the Start Menu. If it appears when
On 2026/4/20 23:1:23, VanguardLH wrote:
[]
Use SysInternals' Process Explorer (PE) to determine what process owns
(has a handle) to the enigmatic window. In PE's toolbar is a sniper
cross-hair icon. Click on it, and then click on the window. PE will
highlight the process that owns that window.
https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer
Good tip.
My guess is what you're seeing is the Start Menu. If it appears when
Yes, I thought it looked like a start menu.
[]
If it is, and he uses your tip above, what process will show?
VanguardLH wrote:
Use SysInternals' Process Explorer (PE) to determine what process owns
(has a handle) to the enigmatic window. In PE's toolbar is a sniper
cross-hair icon. Click on it, and then click on the window. PE will
highlight the process that owns that window.
https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer
Good tip.
My guess is what you're seeing is the Start Menu. If it appears when
Yes, I thought it looked like a start menu. If it is, and he uses your
tip above, what process will show?
The Start Menu you are seeing is for Windows 11, but you posted in aIt's definitely Win10 - Control Panel | System says Win 10 Home and
Windows 10 newsgroup.
I wrote the PE mention before looking at the screenshot which is what I remember seeing on another user's desktop PC that has Windows 11 (I'm
still back on Windows 10); however, I did play around with Start 11 on
her desktop, and remember seeing that version of the Start Menu (as I
recall, you selected to see all programs to get that particular view of
the Start Menu). But, I think, it was the view shown by Start 11, and
not the native one from Microsoft. Been too long to be sure. Since the
OP mentioned using ClassicShell, and it modifies the Start Menu, could
be the OP has ClassicShell show a modified Start Menu, or is
incorporating yet more software to modify the Start Menu.
Here a screen shots of the normal Classic Shell start menu (click on
Windows icon at LHS of taskbar)
https://i.postimg.cc/VsgsVytT/Image1.png
and Windows start menu (shift-click on Windows icon)
https://i.postimg.cc/mr7B3KRj/Image2.png
The second one is different to the popup that was appearing
spontaneously, from my original posting.
If the popup is the Win 11 start menu and I've got Win 10, there's
something weird going on...
My Win 10 laptop has recently (last few days) started popping up a large black dialogue box over the left hand half of the screen
https://i.postimg.cc/rsVPTmGc/Image1.png
It happens while I am using other program, sometimes while I am not even touching the keyboard (so it's not a random combination of keys that is causing it).
I have Classic Shell installed but that is still working normally. The dialogue that is popping up is not the native Win 10 one which (with
Classic Shell) you can access by Shift-clicking on the Start button.
Any suggestion what the intrusive program is, and a way of disabling it.
It is modal, in that while it is displayed, you cannot interact with any other open app or any shortcuts on the task bar or Quick Launch bar, so
it is Bloody Annoying...
NY <me@privacy.net> wrote:
My Win 10 laptop has recently (last few days) started popping up a largeMy guess is what you're seeing is the Start Menu.
black dialogue box over the left hand half of the screen
https://i.postimg.cc/rsVPTmGc/Image1.png
VanguardLH wrote:
NY <me@privacy.net> wrote:
My Win 10 laptop has recently (last few days) started popping up a large >>> black dialogue box over the left hand half of the screen
https://i.postimg.cc/rsVPTmGc/Image1.png
My guess is what you're seeing is the Start Menu.
It's the Search box.
Located on the Task Bar(Icon only, or Icon+Label or Search Box)
Normal settings for least intrusion are:
Task View Off, Widgets Off, Search History Off, Search Highlights Off, Search My Accounts Off
My Win 10 laptop has recently (last few days) started popping up a large >black dialogue box over the left hand half of the screen
I only recall seeing it long ago, but not how or why. I removed the
search box from the taskbar way back when I installed Win 10. Instead I
tap the Start Menu key, and start typing in on what I want to search. I
also tweaked Win 10 to only show local search results, no web results.
On Mon, 20 Apr 2026 17:00:44 +0100, NY <me@privacy.net> wrote:
My Win 10 laptop has recently (last few days) started popping up a large
black dialogue box over the left hand half of the screen
I don't know if it;'s related, by my W10 sometimes seems to lose focus
and jump out of the window I'm working on. I'll be at the command
prompt typing the name of the batchfile, and suddenly what I'm typing
stops appearing on the screen.
Something similar seems to happen on web sites -- at first I assumed
it was it was something wrong with the web site editor, but now I
think it may be because it's losing focus on the window I'm working
in.
On Tue, 21 Apr 2026 16:54:58 -0500, VanguardLH <V@nguard.LH> wrote:
I only recall seeing it long ago, but not how or why. I removed the
search box from the taskbar way back when I installed Win 10. Instead I
tap the Start Menu key, and start typing in on what I want to search. I
also tweaked Win 10 to only show local search results, no web results.
How does one do that tweak?
I have programs that don't show up on the start menu, so I have to
type their names into the search thingy and sometimes it shows me web results, which is the last thing I want. I only want web results when
I'm in my open browser.
The OP said QuickSearch was showing up sporadically. A possibility isI think I'd probably remember hitting Win+Q or Ctrl+Q - particularly the Q.
he was hitting Win+Q by accident (hotkey to bring up QuickSearch)
instead of Ctrl+Q in whatever program he was using at the time, or there
was a 3-finger detect by his touchpad (which he leaves enabled despite
using a mouse). I mentioned he could disable the touchpad in Device
Manager, but now I recall some touchpads have a button you can press
adjacent to the touchpad to disable/enable it. "My Win 10 laptop"
doesn't identify just which brand and model he has, so he'll have to
read the manual or find info on whatever he has to see if the touchpad
has an easy on/off switch.
On 21/04/2026 22:54, VanguardLH wrote:
The OP said QuickSearch was showing up sporadically. A possibility isI think I'd probably remember hitting Win+Q or Ctrl+Q - particularly the Q.
he was hitting Win+Q by accident (hotkey to bring up QuickSearch)
instead of Ctrl+Q in whatever program he was using at the time, or there
was a 3-finger detect by his touchpad (which he leaves enabled despite
using a mouse). I mentioned he could disable the touchpad in Device
Manager, but now I recall some touchpads have a button you can press
adjacent to the touchpad to disable/enable it. "My Win 10 laptop"
doesn't identify just which brand and model he has, so he'll have to
read the manual or find info on whatever he has to see if the touchpad
has an easy on/off switch.
There is the possibility that I'm touching the touchpad, either with a
stray finger or some clothing touching it as I'm sitting with my laptop
on my lap.
I've not disabled the touchpad entirely because it is useful to have it
as an alternative to the mouse if the mouse stops working (cable fault - which had happened a few times!) or I haven't got the mouse with me. I
have disabled Tapping because that is intrusive: I get a lot of spurious left-clicks because I happen to tap accidentally as I'm moving the mouse cursor by touchpad.
A long time ago I set the Search entry on the taskbar to Hidden (as for Cortana).
It's weird that the problem started, apparently spontaneously, a few
days ago when nothing that I'm aware of has changed.
Having said that, I've not seen it since I last posted late on 20 April.
I don't like problems which arrive, mess things up for a few days, and
then disappear again.
I'm wondering whether it could have been a dodgy mouse connection that
was sending random keystrokes (somehow). The USB socket on the same side
of my laptop as my power cable doesn't grip the mouse USB plug quite as tightly as it should; occasionally it works loose and I get mouse
movement OK but the buttons stop working. But that socket is more
convenient because it leaves all of the opposite side free in case I
want to stand the laptop on a table temporarily and there isn't enough
space to lay it down conventionally.
On Wed, 4/22/2026 12:28 AM, Steve Hayes wrote:
On Mon, 20 Apr 2026 17:00:44 +0100, NY <me@privacy.net> wrote:
My Win 10 laptop has recently (last few days) started popping up a large >>> black dialogue box over the left hand half of the screen
I don't know if it;'s related, by my W10 sometimes seems to lose focus
and jump out of the window I'm working on. I'll be at the command
prompt typing the name of the batchfile, and suddenly what I'm typing
stops appearing on the screen.
Something similar seems to happen on web sites -- at first I assumed
it was it was something wrong with the web site editor, but now I
think it may be because it's losing focus on the window I'm working
in.
I find this tends to happen around startup time, when two or three
command prompt windows are being used for windows update related materials >(UpdateSessionOrchestration). That causes the first program I have launched for myself, to lose focus.
NY <me@privacy.net> wrote:
Someone else mentioned there is an on-hover event when the mouse pointer
A long time ago I set the Search entry on the taskbar to Hidden (as for
Cortana).
is over the search box in the taskbar, but you said you removed that
element in the taskbar. Did you actually remove the search element in taskbar, or just reduce it from an input box to a magnifier glass icon?
On Wed, 22 Apr 2026 02:47:34 -0400, Paul <nospam@needed.invalid>
wrote:
On Wed, 4/22/2026 12:28 AM, Steve Hayes wrote:
On Mon, 20 Apr 2026 17:00:44 +0100, NY <me@privacy.net> wrote:
My Win 10 laptop has recently (last few days) started popping up a large >>>> black dialogue box over the left hand half of the screen
I don't know if it;'s related, by my W10 sometimes seems to lose focus
and jump out of the window I'm working on. I'll be at the command
prompt typing the name of the batchfile, and suddenly what I'm typing
stops appearing on the screen.
Something similar seems to happen on web sites -- at first I assumed
it was it was something wrong with the web site editor, but now I
think it may be because it's losing focus on the window I'm working
in.
I find this tends to happen around startup time, when two or three
command prompt windows are being used for windows update related materials >> (UpdateSessionOrchestration). That causes the first program I have launched for myself, to lose focus.
One example is when I am typing something in exTwitter, and suddenty a "Save/Discard" box pops up. If the next letter I type happens to be S
or D, everything I typed disappears.
At first I thought this was a problem with the exTwitter editor, but
now I wonder if it is a problem of Win10 jumping to another window.
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