My monitor flickers on any usb connection or disconnection

Question

Whenever I plug a USB drive or unplug it any phone etc my monitor goes black for a second and then comes back online I used to have this issue before too but it got fixed automatically somehow and then after I reinstalled windows today it came back I think it's some driver issue but I cannot figure it out I don't have a GPU I connect my monitor with with thunderbolt 4 to displayport and idk why it's happening I also have this weird thing with my mouse that if I take it to the edges of the screen the cursor comes out of the opposite side of that edge, so someone help me please

Answer 1

Hi Prakhar Harne,

Thank you for reaching out to Microsoft Q&A forum and for explaining the issue in detail. I understand how discouraging it can be to see this issue return, especially after the issue had been resolved previously.

Based on what you described, this behavior is often linked to how Windows reinitializes the Thunderbolt / USB‑C DisplayPort connection when a USB device is plugged in or removed. After a fresh Windows reinstall, the system may still be using generic drivers, which can cause the display link to briefly reset during USB activity.

To help stabilize the connection and reduce the chance of further screen interruptions, I recommend the following additional steps:

Step 1: Install the correct manufacturer drivers

After reinstalling Windows, the system often uses generic drivers, which can cause the Thunderbolt / USB‑C DisplayPort connection to briefly reset when USB devices are plugged in or removed.

Please install all of the following drivers directly from your device manufacturer’s support website (not only from Windows Update):

• Thunderbolt driver or Thunderbolt Control Center package
• Chipset driver
• USB controller driver
• Graphics driver (Intel / AMD, depending on your system)

Once installed, restart the system even if Windows does not prompt you to do so.

Step 2: Disable Windows Fast Startup

Fast Startup can interfere with how Thunderbolt and USB‑C devices restore their connection state, which may trigger a short display blackout.

1. Open Control Panel > Power Options
2. Click Choose what the power buttons do
3. Select Change settings that are currently unavailable
4. Uncheck Turn on fast startup
5. Save changes and restart the system

Step 3: Verify the cable and connection path

If your monitor is connected via Thunderbolt or USB‑C to DisplayPort:

• Make sure the cable is certified for Thunderbolt 4 or USB‑C to DisplayPort 1.4
• Avoid adapters or hubs temporarily and connect the monitor directly
• If available, test a different cable or port to rule out link instability

Step 4: Check the mouse cursor behavior

The mouse pointer moving from one screen edge and appearing on the opposite side may be caused by a cursor‑wrap feature, commonly enabled through Microsoft PowerToys.

If PowerToys is installed:

1. Open PowerToys > Mouse Utilities
2. Disable Cursor wrap
3. Restart PowerToys or sign out and back in

Please keep me posted on how it goes. I’m here if you need further assistance.

Thank you again for your patience and persistence in troubleshooting this issue.

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Answer 2

The issue you're experiencing with your monitor flickering when connecting or disconnecting USB devices may be related to how the Thunderbolt connection interacts with your system's power management and display settings. Here are a few potential causes and solutions:

1. Driver Issues: Since you mentioned that the issue reappeared after reinstalling Windows, it's possible that the drivers for your Thunderbolt connection or USB devices are not properly installed or updated. Make sure to check for the latest drivers for your Thunderbolt controller and USB devices from the manufacturer's website.
2. Power Management Settings: Sometimes, power management settings can cause devices to behave unexpectedly. You can try disabling Fast Startup in Windows, as it can interfere with how devices are initialized during boot.
   • Go to Control Panel > Power Options > Choose what the power buttons do and uncheck Turn on fast startup.
3. Display Settings: The flickering could also be a result of how your display settings are configured. Ensure that your display settings are correctly set for your monitor's refresh rate and resolution. You can access this by right-clicking on the desktop and selecting Display settings.
4. Thunderbolt Dock Issues: If you are using a Thunderbolt dock, there might be compatibility issues with the dock itself. Ensure that the dock's firmware is up to date and that it supports the devices you are connecting.
5. Mouse Cursor Issue: The issue with your mouse cursor wrapping around could be related to display settings or how multiple displays are configured. Check your display arrangement in the Display settings to ensure that the monitors are aligned correctly.

If these steps do not resolve the issue, consider reaching out to Microsoft support or the manufacturer of your Thunderbolt dock for further assistance.

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References:

• Devices connected through a Thunderbolt Dock stop working after the computer resumes from a power state
• Docking station external monitors not working when a Windows 10 version 1703-based portable computer is connected