Windows 10: cant open file explorer, control panel...

Weird issue with Acer CB280HK 4k Monitor


So, I was lucky enough to get a new monitor and new pc the other day; a dell xps 8700, and for purposes of this discussion, the video card set up is a intel hd graphics 4600 board, and a Nvidia GTX745, with 4 gigs of ram. The monitor is a 4k capable monitor, and to get the full res, its plugged in via a display port connector, into the intel board, since the nvidia card does NOT have a display port connector, only hdmi, which would limit the res to 1920x1080.
Anyways, the monitor is fantastic, and things are so clear and bright it blows my mind!
Problem is, ever since connecting it, for some crazy reason, I can NOT get my control panel to open, my file explorer to open, or adjust some of my desktop properties...EVERYTHING else works great, but those things no longer work..
Weird thing is, if I downres to 1920x1080, I can get the file explorer to work, but thats about it..
I ended up downloading MulitCommander Pro, which is an alternative file manager, and it works just fine.
I am on windows version 10547, Home version..

All these things worked perfectly with my old monitor, connected via hdmi@1920x1080, so I dont think anything serious is wrong, but I cant figure out why these built in windows core items wont open up when the res is at 3840X2160.
Hopefully, a new insiders version might help. but otherwise I am stumped.

Thanks for any help that you can offer!

:)

 

Can't open file explorer, control panel, task manager

When I go to open file explorer, nothing happens.

When I go to open control panel, the window appears but no icons show up.

When I go to open Task Manager, I get the error 'C:\windows\system32\DUI70.dll'. I looked up how to resolve this issue, and it says to do a sfc /scannow, and I have tried that, but it says 'Windows Resource Protection could not perform the requested operation'
after 29%.

Also, when I try to delete an icon off my desktop background, the screen goes black for a couple seconds, and returns back to my desktop screen as if nothing happened.

I googled how to solve all these problems, but none of the solutions worked for me. I tried resetting the pc, but when I click the button to do so, I get the error 'C:\windows\system32\DUI70.dll'.

 

Can't open file explorer, control panel, task manager

Hello,

Have you tried
booting your PC in Safe mode and see if you'd still get the same issue?

Also, please confirm any recent changes made prior to the issue. If updates were done, check our support page and follow advised steps to

resolve Windows Update errors by using the DISM or System Update Readiness tool.

Regards.

 

So basically, when you have the monitor with the high resolution connected, explorer.exe is not opening. It starts working again, once you lower the resolution to 1920x1080px or less.

Is there an error message? What happens, when you click a shortcut to start Windows Explorer? Really nothing?

If you check the system logs in the Control Panel > System and Security > Administrative Tools > View Event Logs, do you then have anything useful in there? I guess there should be at least something...

 

actually, what happens is, the screen just turns all blue for a second or 2, the icons on the taskbar disappear, then the wallpaper comes back on, and if I right click the taskbar, the taskbar icons come back as normal..
very weird, as it only happens with windows file manager and control panel, pretty much everything else works perfectly..

 

That sounds like explorer.exe is actually crashing and then automatically gets restarted.

Please check the event logs - an application crash will be in there!

 

Here is the log I get when I try to open file explorer..



Faulting application name: explorer.exe, version: 10.0.10547.0, time stamp: 0x55f614f9
Faulting module name: USER32.dll, version: 10.0.10547.0, time stamp: 0x55f614e7
Exception code: 0xc000041d
Fault offset: 0x00000000000111ce
Faulting process id: 0x32e4
Faulting application start time: 0x01d0f86ce5023407
Faulting application path: C:\WINDOWS\explorer.exe
Faulting module path: C:\WINDOWS\system32\USER32.dll
Report Id: 715513be-2b24-41a6-ac0d-66a9f9dc7a72
Faulting package full name:
Faulting package-relative application ID:

 

Lower ur DPI, it worked for me *Smile

I had the problem when my DPI was on 175%

Now I'm working on 150%