MSI Raider GE78 HX Thunderbolt Not Working Windows 11: Intel Driver Fix

MSI Raider GE78 HX is a high-performance gaming laptop equipped with a Thunderbolt 4 port supporting data transfer speeds up to 40Gbps and external GPU connection. On Windows 11, the Thunderbolt port does not recognize connected devices, Thunderbolt docks appear and disappear repeatedly, external displays via Thunderbolt show no signal, or the Thunderbolt controller fails to appear in Device Manager. I have resolved Thunderbolt connectivity failures on MSI Raider GE78 HX units and this guide covers all confirmed fixes.

Why MSI Raider GE78 HX Thunderbolt Not Working Windows 11

Intel Thunderbolt Controller Driver Outdated or Corrupted

MSI Raider GE78 HX uses an Intel Thunderbolt 4 controller chip that requires a specific driver for Windows 11 to communicate with Thunderbolt devices. Windows 11 does not include a generic Thunderbolt controller driver — the Intel-specific driver must be installed separately. If the Thunderbolt controller driver was removed during a Windows reinstall, was corrupted by a Windows Update, or was never installed on a fresh Windows installation, the Thunderbolt port functions only as a USB 3.2 port without Thunderbolt capabilities. Installing the Intel Thunderbolt Software and controller driver enables full Thunderbolt 4 functionality.

Thunderbolt Device Security Level Blocking Unapproved Devices

Windows 11 Thunderbolt security requires user approval before a new Thunderbolt device is authorized to communicate with the system. This security feature prevents unauthorized DMA access through Thunderbolt. When a new Thunderbolt device is connected, a notification appears requesting authorization. If this notification was missed or dismissed, the device remains blocked and appears non-functional even though the Thunderbolt hardware and driver are working correctly. Authorizing the device in the Thunderbolt software manager allows it to communicate normally.

MSI Raider GE78 HX BIOS Thunderbolt Security Setting Disabled

The MSI Raider GE78 HX BIOS includes a Thunderbolt configuration section where the Thunderbolt controller can be enabled or disabled and the security level can be set. If the Thunderbolt controller is disabled in BIOS, no devices are recognized regardless of driver state. Additionally, some BIOS security policies set the Thunderbolt level to No Security, All Devices Allowed, or User Authorization. Mismatched settings between the BIOS Thunderbolt level and the Windows Thunderbolt software expectations can prevent device recognition.

How to Fix MSI Raider GE78 HX Thunderbolt Not Working Windows 11

Step 1 — Install Intel Thunderbolt Software and Controller Driver

Go to MSI support page and search for Raider GE78 HX. Under Drivers and Utilities, find the Intel Thunderbolt Software or Intel Thunderbolt 4 Controller Driver in the Chipset or System section. Download and install both the driver and the Thunderbolt software application. Reboot after installation. After reboot, the Intel Thunderbolt system tray icon should appear. Connect a Thunderbolt device — a notification may appear asking to approve the connection. Click Approve. The Thunderbolt device should now be detected and functional. Verify in Device Manager that Intel Thunderbolt Controller appears under System devices without errors.

Step 2 — Authorize Thunderbolt Device in Intel Thunderbolt Software

If the Thunderbolt device was previously blocked, open Intel Thunderbolt Software from the system tray. Navigate to the Devices or Security tab. Find the connected Thunderbolt device in the list — it may show as Unapproved or Blocked. Select it and click Approve or Always Connect. For Thunderbolt docks, click Always Connect to allow automatic connection on future plugging. After approving, disconnect and reconnect the Thunderbolt device. The device should now be fully functional. If no notification appeared when connecting the device, verify the Intel Thunderbolt driver is installed correctly in Device Manager.

Step 3 — Check and Configure BIOS Thunderbolt Settings

Restart the MSI Raider GE78 HX and press Delete during boot to enter BIOS. Navigate to Settings, Advanced, Thunderbolt Configuration. Ensure Thunderbolt Support is Enabled. Set Security Level to User Authorization or No Security Checks depending on your preference — User Authorization provides security while No Security Checks allows all Thunderbolt devices without prompts. Save and exit BIOS. Also check for a BIOS update for the GE78 HX on the MSI support page as Thunderbolt compatibility improvements are frequently included in BIOS updates for the GE78 platform.

My MSI Raider Thunderbolt port stopped working after reinstalling Windows 11. Found that the Intel Thunderbolt software was not installed — it is not included in Windows by default. Downloaded from MSI support, installed, approved my dock in the Thunderbolt software, and everything worked. Thunderbolt requires its own controller software separate from the USB drivers. — Alex M., MSI Gaming Community

Frequently Asked Questions

Can I connect an external GPU via Thunderbolt on MSI Raider GE78 HX?

Yes. MSI Raider GE78 HX Thunderbolt 4 port supports external GPU enclosures. Connect a Thunderbolt eGPU enclosure containing a full desktop GPU. The eGPU appears as an additional display adapter in Device Manager. Performance is limited to approximately 80 percent of the GPU’s full capability due to Thunderbolt bandwidth. With the GE78 HX already having a powerful Nvidia RTX GPU internally, an eGPU provides additional rendering power for GPU-intensive creative work.

What Thunderbolt 4 speed does MSI Raider GE78 HX support?

Thunderbolt 4 on the MSI Raider GE78 HX supports up to 40Gbps bidirectional data transfer. This is equivalent to four USB 3.2 Gen 2 lanes combined. Actual transfer speeds to storage devices depend on the storage device speed. For external NVMe enclosures, real-world speeds reach approximately 2,800MB/s to 3,500MB/s depending on the SSD inside the enclosure. Thunderbolt 4 also supports up to two 4K displays or one 8K display simultaneously.

Is Thunderbolt 4 backwards compatible with USB-C devices on GE78 HX?

Yes. The Thunderbolt 4 port on the MSI Raider GE78 HX is fully backwards compatible with USB-C devices including USB 3.2, USB 2.0, and USB Power Delivery. A USB-C cable connected to the Thunderbolt port works at USB speeds without Thunderbolt protocol. USB-C devices do not need Thunderbolt authorization in the Intel Thunderbolt software — only devices using the Thunderbolt protocol require approval.

How do I know if a cable supports Thunderbolt 4 on MSI Raider GE78 HX?

Thunderbolt 4 cables are certified and marked with a Thunderbolt lightning bolt icon. They must be Intel-certified Thunderbolt 4 cables for full 40Gbps speeds and daisy chaining support. Standard USB-C cables, including USB 3.2 and USB 2.0 cables, work in the Thunderbolt port but at their USB speed limit rather than Thunderbolt speeds. Passive USB-C cables max out at 20Gbps. For full Thunderbolt 4 performance use only certified Thunderbolt 4 cables.

Conclusion

MSI Raider GE78 HX Thunderbolt not working on Windows 11 is caused by the Intel Thunderbolt controller driver and software not being installed, a connected Thunderbolt device awaiting user authorization in the Thunderbolt security manager, or the Thunderbolt controller being disabled in the MSI BIOS. Install the Intel Thunderbolt software and controller driver from MSI support as the primary fix since Windows 11 does not include Thunderbolt controller drivers by default, authorize blocked devices in the Intel Thunderbolt software application that appears in the system tray after installation, and verify the BIOS Thunderbolt settings are enabled with the correct security level. Installing the Intel Thunderbolt software resolves all connectivity failures caused by missing driver components.