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STOP Errors are usually the result of a hardware malfunction or device driver issue. It is also possible to receive a Blue Screen Error due to bad system memory, malfunctioning power supply, components overheating, or hardware overclocked beyond its specification. In older versions of the Windows OS you may also receive Blue Screen Errors due to incompatible DLL files.

Since the only option when receiving a Blue Screen Error is to reboot, any unsaved data is lost. With that in mind, it is very important to eliminate these errors to protect your data.

Basic Troubleshooting

Troubleshooting STOP Errors can be a difficult and time consuming process. Try these basic steps to fix your own Blue Scree Error. We hope it will help you avoid an expensive service call and provide a rewarding experience of solving the problem on your own.

Advanced Troubleshooting

The following details are for advanced users. These are provided for your convenience and may help those with advanced knowledge discover the root cause of their STOP Error.


The NETWORK_BOOT_DUPLICATE_ADDRESS stop error code has a value of 0x000000BC. This indicates that a duplicate IP address was assigned to this machine while booting off a network.


The following parameters are displayed on the blue screen.

1The IP address, shown as a DWORD. An address of the form will appear as 0xDDCCBBAA.
2The hardware address of the other machine. (For an Ethernet connection, see the following note.)
3The hardware address of the other machine. (For an Ethernet connection, see the following note.)
4The hardware address of the other machine. (For an Ethernet connection, this will be zero.)

Note  When Parameter 4 equals zero, this indicates an Ethernet connection. In that case, the MAC address will be stored in Parameter 2 and Parameter 3. An Ethernet MAC address of the form aa-bb-cc-dd-ee-ff will cause Parameter 2 to equal 0xAABBCCDD, and Parameter 3 to equal 0xEEFF0000.


This error indicates that when TCP/IP sent out an ARP for its IP address, it got a response from another machine indicating a duplicate IP address.

When Windows is booting off a network, this is a fatal error.

Helpful Tools

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NETWORK_BOOT_DUPLICATE_ADDRESS    |    Repair Windows Error 0x000000BC    |    Fix Error Code 0x000000BC