1.    26 Sep 2015 #1
    Join Date : Jun 2015
    Posts : 270
    latest windows insider home build

    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!
      My ComputerSystem Spec
  2.    26 Sep 2015 #2
    Join Date : Aug 2015
    Posts : 610

    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...
      My ComputerSystem Spec
  3.    26 Sep 2015 #3
    Join Date : Jun 2015
    Posts : 270
    latest windows insider home build
    Thread Starter

    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..
      My ComputerSystem Spec
  4.    26 Sep 2015 #4
    Join Date : Aug 2015
    Posts : 610

    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!
      My ComputerSystem Spec
  5.    26 Sep 2015 #5
    Join Date : Jun 2015
    Posts : 270
    latest windows insider home build
    Thread Starter

    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:
      My ComputerSystem Spec
  6.    29 Dec 2015 #6
    Join Date : Dec 2015
    Posts : 1
    Windows 10 Pro x64

    Lower ur DPI, it worked for me

    I had the problem when my DPI was on 175%

    Now I'm working on 150%

    Click image for larger version. 

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ID:	55947
      My ComputerSystem Spec


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