Code 12, as indicated by the error message, “This device cannot find enough free resources that it can use. If you want to use this device, you will need to disable one of the other devices on this system (Code 12),” is an error that arises when a device is unable to locate adequate free resources for its operation.
Error Code 12
This often occurs due to conflicts involving I/O ports, interrupts, or Direct Memory Access channels shared by multiple devices, either as a result of BIOS or operating system configurations. To resolve this issue, it is necessary to identify the source of the conflict and take appropriate actions. The recommended resolutions vary depending on the Windows version being used.
The primary causes of the Code 12 error are the assignment of the same I/O ports, interrupts, or Direct Memory Access channels to two or more devices within the computer system. This assignment can occur due to BIOS settings, operating system configurations, or a combination of both. Additionally, this error can result from insufficient resource allocation by the BIOS to a particular device.
For Windows Vista and Later Versions of Windows:
- Use Device Manager: To resolve conflicts, follow these steps:
- Access Device Manager.
- Identify the device that is experiencing the Code 12 error.
- Refer to the Help information in Device Manager for guidance on resolving device conflicts.
It’s important to note that this error may also occur if the BIOS has not allocated sufficient resources to the device. For instance, if the BIOS fails to allocate an interrupt to a USB controller due to an invalid multiprocessor specification (MPS) table, this error may appear.
For Windows Server 2003, Windows XP, and Windows 2000:
- Open Device Manager:
- Access Device Manager.
- Locate the device with the Code 12 error.
- Double-click the icon representing the problematic device within the Device Manager window.
- Use the Hardware Troubleshooter:
- In the device’s property sheet, click on the “Troubleshoot” option to initiate the hardware troubleshooter specifically designed for the device.
As with the later versions of Windows, this error may also arise if the BIOS has not allocated sufficient resources to a device, such as failing to allocate an interrupt to a USB controller due to an invalid MPS table.
In conclusion, when encountering the Code 12 error, it is essential to investigate the source of resource conflicts involving I/O ports, interrupts, or Direct Memory Access channels among devices. The recommended resolutions involve using Device Manager and the hardware troubleshooter to identify and resolve conflicts. Additionally, consider verifying BIOS resource allocations to ensure proper device functioning. Addressing these issues will allow the device to access the required resources and operate without disruptions. Lastly also see the Acer Aspire 4250 Notebook Drivers.