PowerEdge: Servers with 2nd Generation AMD EPYC processors fail to boot after installing the Hyper-V role

Summary: The article has information about Dell EMC PowerEdge servers with Second Generation AMD EPYC processors fail to boot after installing the Hyper-V role.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms

Dell EMC PowerEdge servers with a Second Generation AMD EPYC processor may not boot to Windows Server 2019 after installing the Hyper-V role. The operating system can go into a recovery state or a blue screen (stop error) can occur indicating an inaccessible boot device.  
 

Note: Other errors or circumstances may occur when installing the Windows Server 2019 Hyper-V role on Dell PowerEdge server with Second Generation AMD EPYC processors.

Cause

Dell Technologies PowerEdge servers with Second Generation AMD EPYC processors fail to boot after installing the Hyper-V role.

Resolution

Perform the following steps to install the Windows Server 2019 Hyper-V role on the affected PowerEdge servers: 

  1. Install Windows Server 2019
  2. Install the latest servicing stack update from the Microsoft Update Catalog which can be found hereThis hyperlink is taking you to a website outside of Dell Technologies.
  3. Install the June 2019 Cumulative Update KB4501371 or newer found hereThis hyperlink is taking you to a website outside of Dell Technologies.
  4. Restart the server
  5. Install the Hyper-V role

Perform the following steps to recover the operating system when the operating system goes into a recovery state or a blue screen (stop error) occurs:

  1. Power off the PowerEdge server
  2. Power on the PowerEdge server and enter the BIOS by pressing F2 information can be found here
  3. Navigate to Processor Settings and disable Virtualization Technology
  4. Exit the BIOS saving the settings and reboot the PowerEdge server to the operating system
  5. Install the latest servicing stack update from the Microsoft Update Catalog which can be found hereThis hyperlink is taking you to a website outside of Dell Technologies.
  6. Install the June 2019 Cumulative Update KB4501371 or newer found hereThis hyperlink is taking you to a website outside of Dell Technologies.
  7. Restart the server and enter the BIOS by pressing F2
  8. Navigate to Processor Settings and enable Virtualization Technology
  9. Exit the BIOS saving the settings and reboot the PowerEdge server to the operating system


Additional Information: 

Note: Dell EMC PowerEdge servers shipped after December 10, 2019 with factory-installed Windows Server 2019 OEM is not impacted by this issue.

 Dell Technologies PowerEdge servers with Second Generation AMD EPYC processors:

  • C6525
  • R6515
  • R6525
  • R7515


Second Generation AMD EPYC processors:

  • 7742
  • 7702
  • 7542
  • 7502
  • 7402
  • 7452
  • 7352
  • 7302
  • 7262

Affected Products

Microsoft Windows Server 2019, PowerEdge C6525, PowerEdge R6515, PowerEdge R6525, PowerEdge R7515, PowerEdge R7525
Article Properties
Article Number: 000134895
Article Type: Solution
Last Modified: 05 Sep 2025
Version:  7
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.