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Razer Core X v2 - Connection Stability Issues

  • June 30, 2026
  • 1 reply
  • 31 views
headDarkLavacity947

 

I’m having a persistent issue connecting Razer Core X V2 (TB5) to Eurocom Raptor X18 laptop.

Problem:

  • Enclosure powers on normally (GPU fans + lighting active)
  • System detects the enclosure, but the RTX 5090 inside is recognized but unable to establish a stable connection via TB5 (Windows keeps cycling until it times out).
  • The RTX 5090 keeps showing up in the Device Manager but disappearing after Windows cycles out.
  • Device Manager shows PCIe Upstream Switch Port – Code 10
  • Connecting the eGPU often causes the internal laptop GPU to fail and fall back to Microsoft Basic Display Adapter

Steps already taken:

  • Verified Windows integrity (DISM + SFC clean)
  • Cleaned background software (removed non-essential startup apps)
  • Tested multiple connection sequences (cold plug, hot plug, different power order)
  • Attempted NVIDIA driver install (fails during download)
  • Confirmed proper PSU installation and cabling
  • Repeated tests produce the same result

Current state: The enclosure is detected, but the GPU never initializes, and the connection destabilizes the system graphics stack after Windows cycles out trying to establish the connection. 

Request: Please advise on:

  • Recommended TB5 connection/boot sequence
  • Required drivers or firmware for Core X V2
  • Any known compatibility issues with systems that already have a dedicated NVIDIA GPU
  • Diagnostic logs you’d like me to provide
  • Next steps if this indicates a hardware or firmware issue

 

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    1 Reply

    Razer.ScarletRouge
    Forum|alt.badge.img

    Hey there, ​@headDarkLavacity947 

    I understand that you're having a persistent connection issue between your Razer Core X V2 (Thunderbolt 5) and your Eurocom Raptor X18. To help isolate the cause of the issue, could you please provide the following information?

    1. Razer Core X V2’s serial number: 
    2. What is the exact model and specification of your Eurocom Raptor X18, including the installed CPU and internal GPU?
    3. Does the issue occur on all Thunderbolt ports on the laptop, or only on a specific port?
    4. Have you tested the Core X V2 with another Thunderbolt-enabled system to see if the behavior is the same?
    5. If possible, could you send screenshots of device Manager showing the Code 10 error. 
     

    You can upload the photo/screenshots using this link and then send me a PM along with the link once it’s uploaded. Thank you!
     

     

    *Thread locked to curb conversation to PM. 

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