Random misbehavior in Windows 11 Pro on my new Dell Pro Max Tower T2 FCT2250


Ferrara

Member
Local time
12:52 PM
Posts
26
OS
Windows 11
I've been using the new PC about a month now. There are a couple random events that have spontaneously occurred in the settings. Both of these scenarios have occurred more than once, maybe three to five times, both before and after I reinstalled Windows ten days ago.

I use an external DAC to process the audio via USB and send the analog signal to my stereo system. It is set as my default audio device. There is also the internal Realtek soundcard which is listed as available devices under speakers and headphones, and I have disabled both. There is my Dell monitor which has speakers and it as also listed as an available audio device, which I have also disabled. Lastly, there is my Sony Bravia smart TV which has speakers and is connected to one of the mini DP ports on my Nvidia video card, which I've also disabled, since I only want to use the DAC as an audio device. There have been occasions where I went to play some audio on the PC and no sound came out, and I go to look at the speaker icon in the system tray and hover the mouse pointer over it to find that my audio device is now the Sony TV. I open Control Panel and go to the Manage Audio Devices window and see that the Sony TV which I disabled as an audio device is now shown as the default device. So I disable it, reset the Rega DAC as the default device, and all is well until the same thing happens again a few days or a week or two later. When it happens the TV is powered off, I only use it as a monitor while I'm on the computer occasionally. So this random reset is not do to the TV coming online.

The other thing is that I am just doing some things on the computer and suddenly the desktop display shrinks for a moment and then resizes to normal. I ignore it until later when I cannot find the mouse pointer, and then I realize that it has wandered off the right side of the screen, and I check my display settings, which I have set to duplicate these displays, and find that the setting has changed to extend these displays. So I change it back to duplicate, and my mouse pointer no longer wanders off the right edge of the screen. But yesterday when it happened Windows also changed the screen resolution when it changed the display setting for multiple displays, and when I reset it to duplicate these displays the icons and desktop look blew up to become all blurry and ugly. I didn't realize the screen resolution had changed until I called Dell Support and the agent figured it out for me. So now when it happens again I will have to change the settings for multiple displays and for screen resolution.

What I want to know is: 1. Why do these two random resets keep happening (the display reset happens while I am using the computer, the audio device reset may be happening when I restart the computer, or during regular use, I can't recall for sure)? 2. What can I do to troubleshoot and correct these annoyances so they don't keep recurring? I can provide more details about my system if it will be helpful, just ask.

On Sunday after a restart another thing happened, which was my default apps for all browser file extensions and image files had been reset from Firefox to Edge, and from Irfanview to Photos. It was a bother to have to go reset all those file types to my default app of choice. So far it has only happened once. I hope it doesn't become a repeat offender like the previously described Windows misbehaviors.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Pro Max Tower T2 FCT2250 Desktop PC
    Monitor(s) Displays
    Dell E2225HSM Pro 22" Adjustable Stand Monitor, Sony Bravia 4K VH21 KD-43X85K 43" 4K HDR LED Google TV
    Screen Resolution
    1920 X 1080, 3840 X 2160
Hi there.

Only thing I can suggest atm, is turning off fast startup.
  • Open Control Panel.
  • Select Hardware and Sound.
  • Click Power Options.
  • On the left, choose Choose what the power buttons do.
  • Click Change settings that are currently unavailable.
  • Under Shutdown settings, untick > Turn on fast startup.
  • Click Save changes.

Fast Startup might be causing Windows to forget default audio devices, re‑enable disabled devices, and reset display behaviour?
Turning it off should force Windows to perform a full, clean boot each time.
 
Last edited:

My Computers

System One System Two

  • OS
    Windows 11 Pro 25H2 Build 26200.8524
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built 2013
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard thingy
    Monitor(s) Displays
    5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Touch Screen Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech: G402 / G502 / Mx Masters / Mx Air Cordless
    Internet Speed
    2000/500Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
    TP-Link BE9300 WiFi 7 Bluetooth 5.4 (Archer TBE550E)
    TP-Link TX201 V1 2.5GB Lan

    Grandstream HT812 - VoIP
    ASUS DSL-AX82U - Mesh
    ASUS RT-AC68U - Mesh
    ASUS RT-BE88U Router

    Brother MFC-L2880DW Printer

    I’m on a horse.
  • Operating System
    Windows 11 Pro 25H2 Build 26200.8524
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7 14IRL8 - 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Antivirus
    Defender / Malwarebytes
    Other Info
    …still on a horse.
Hi there.

Only thing I can suggest atm, is turning off fast startup.
  • Open Control Panel.
  • Select Hardware and Sound.
  • Click Power Options.
  • On the left, choose Choose what the power buttons do.
  • Click Change settings that are currently unavailable.
  • Under Shutdown settings, untick Turn on fast startup (recommended).
  • Click Save changes.

Fast Startup might be causing Windows to forget default audio devices, re‑enable disabled devices, and reset display behaviour?
Turning it off should force Windows to perform a full, clean boot each time.

Thanks, I just did what you suggested and will hope that it helps. Peace...
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Pro Max Tower T2 FCT2250 Desktop PC
    Monitor(s) Displays
    Dell E2225HSM Pro 22" Adjustable Stand Monitor, Sony Bravia 4K VH21 KD-43X85K 43" 4K HDR LED Google TV
    Screen Resolution
    1920 X 1080, 3840 X 2160
Thanks, I just did what you suggested and will hope that it helps. Peace...

Hi Ferrara. I hopeit does help. If nothing else, it should enable a proper scan of peripherals, because of the clean boot. Fingers crossed 🤞
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 25H2 Build 26200.8524
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built 2013
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard thingy
    Monitor(s) Displays
    5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Touch Screen Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech: G402 / G502 / Mx Masters / Mx Air Cordless
    Internet Speed
    2000/500Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
    TP-Link BE9300 WiFi 7 Bluetooth 5.4 (Archer TBE550E)
    TP-Link TX201 V1 2.5GB Lan

    Grandstream HT812 - VoIP
    ASUS DSL-AX82U - Mesh
    ASUS RT-AC68U - Mesh
    ASUS RT-BE88U Router

    Brother MFC-L2880DW Printer

    I’m on a horse.
  • Operating System
    Windows 11 Pro 25H2 Build 26200.8524
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7 14IRL8 - 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Antivirus
    Defender / Malwarebytes
    Other Info
    …still on a horse.

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