The error code 0x00000091 is less common and there isn’t a universally documented Windows error code associated with this specific value. Here are two possibilities based on the context:

1. Windows Server 2012 Hardware Incompatibility: According to some online communities, there have been reports of 0x00000091 appearing on Windows Server 2012 systems during bootup. This might indicate hardware incompatibility issues, particularly when trying to run Windows Server 2012 on older hardware that wasn’t officially supported by Microsoft.

2. Potential Non-Standard Error Code: In other situations, 0x00000091 could be a non-standard error code used by a specific program or device driver on your system. Without context about where you encountered this code, it’s difficult to pinpoint the exact meaning.

How to proceed:

Gather Context:

Understanding where you saw the error code is crucial for further troubleshooting. Here are some questions to consider:

• Where did you see the error code? (Specific program, device driver, system log message, etc.)
• What were you doing when the error occurred? (Booting up, running a specific program, etc.)
• Were there any accompanying error messages or symptoms? (Program crashes, unexpected behavior, etc.)

Troubleshooting Steps:

Here are some approaches you can take depending on the context:

Windows Server 2012 Boot Error (Hardware Incompatibility):

1. Check Hardware Compatibility: Refer to Microsoft’s documentation for Windows Server 2012 to verify if your hardware meets the minimum system requirements. Upgrading incompatible hardware might be necessary.
2. Consider Alternative OS: If upgrading hardware isn’t feasible, explore if an older version of Windows Server or a different server operating system is compatible with your existing hardware.

Potential Non-Standard Error Code:

1. Search Online: Look for information about the program or device driver where you encountered the error code. Search online forums or support websites related to that program/driver. You might find resources explaining the error code and how to fix it within that specific software or hardware.

2. Basic Troubleshooting:

   • Restart your computer.
   • Check for Windows updates (if applicable).
   • Update the program or device driver where you saw the error (if applicable).

Advanced Troubleshooting (For Technicians):

• System Logs: Use Event Viewer to access system logs. While deciphering event viewer entries can be technical, searching for entries around the time you encountered the error code might provide clues about the failing component or software.
• Process Monitor (Optional): Technicians can use tools like Process Monitor to monitor system activity and identify processes or drivers that might be associated with the error code.

Seeking Help:

If none of these steps work and you’re unable to identify the program or component causing the error, consider reaching out to the software developer, device manufacturer, or a computer technician for further assistance. They might have more information specific to the context of where you encountered the error and potentially identify a more precise solution.