Users Guide

Resolution
This is a known issue. This issue has been fixed in operating systems pre-installed by Dell and in the recovery media shipped with your
system. For more information, see the knowledge base article KB2894179 at support.microsoft.com.
Troubleshooting system crash at cng.sys with watchdog
Error violation
Issue: System encountered Blue Screen of Death at cng.sys with "Watchdog Error violation" error.
Cng.sys blue screen errors can be caused by a variety of hardware, firmware, driver, or software issues. These could be related to either
Microsoft Windows software or hardware issue. “cng.sys” errors can be caused by:
1. Incorrectly configured, old, or corrupted Microsoft Windows device drivers.
2. Corruption in Microsoft Windows registry from a recent cng.sys-related software change
3. Virus or malware infection that has corrupted the cng.sys file
4. Hardware conflict after installing new hardware, or hardware related to cng.sys
5. Damaged or removed system files after you've installed software or drivers related to Microsoft Windows.
6. cng.sys blue screen caused by a damaged hard disk.
7. cng.sys STOP error due to memory (RAM) corruption.
To fix the issue:
1. Ensure system is updated with latest version of the cng.sys .
2. Ensure that all configurations and data is backed up prior to updating BIOS or Firmware.
3. Update latest BIOS, firmware and related drivers.
4. Perform general hardware diagnostic to ensure system health.
5. If the issue persists, call Dell Technical Support for assistance.
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Host bus adapter mini is missing physical disks and
backplane in Windows
Issue—On a server platform that supports HBA330 mini card, if you make any of the following changes:
• Move the rear backplane of R730XD to an onboard controller.
• Move an HBA330 mini from one server with one backplane configuration to another server with a different backplane configuration.
after Windows is installed, then the operating system does not detect a physical disk. However, the iDRAC and HBA330 BIOS displays all
the physical disks as working fine.
NOTE:
This issue affects the Windows operating system. However, iDRAC and HBA330 BIOS displays all disks and
backplanes as working fine. The presence of a Generic SCSI Enclosure device in Device Manager is required for Storage
Spaces Direct. If this device is not available, no enclosure is presented in Cluster Manager that is required for Storage
Spaces Direct.
Workaround—Do not replace hardware. The HBA330 mini Windows driver writes a Driver Mapping Page to the HBA330 mini firmware.
If the backplane configuration is changed after the Operating System is installed, the information displayed on the Driver Mapping page is
incorrect and you need to reset the page. To reset the Driver Mapping page, use a boot image. If you observe this issue again, contact the
Dell Technical Support.
Converting evaluation OS version to retail OS version
Issue:Customer is attempting to install Windows 2012 R2 using the license key provided by Dell EMC but do not have the media at hand.
Customer then proceed to use the evaluation version to upgrade but the version did not match. Errors occurred when inserting the license
key.
Corrective actions:
To fix the issue, follow the guidelines from the link below. https://docs.microsoft.com/en-us/windows-server/get-started/supported-
upgrade-paths
Troubleshooting operating system issues
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