How to identify faulty part when facing BUS DEVICE FUNCTION error

Table Of Contents

1. Error Message
2. Ways To Determine Bus/Device/Function
3. Troubleshooting Steps

1. Error Message

• E171f
• E1711
• E1712

The bus device and function point to a particular device on the PCI bus. The device can error out for a few reasons. Drivers/Firmware can make a device act erratic like its failing and trigger this message. The obvious other reason would be that the device is malfunctioning. The B# D# F# is the address to the devices location on the PCI bus.

2. Ways To Determine Bus/Device/Function

a. BUS/Device/Function can be found in a XML file in the DSET directory

When a DSET report is created on a system, the file binrawxmlslots.xml can be found in the directory of the created collection.

Fig. 1: DSET folder

Double click on the file for opening it in Internet Explorer or any other browser. Each device is listed by name and under each device name the <BusNum>,<DeviceNum>, and <FunctionNum> are listed.

Fig. 2: Opened in IE

b. In Windows Device Manager you can check the properties windows

Enter the Windows Device Manager (Windows OS only) and right click on the specific device you want to check. Click on Properties and check the entry under Location on the General tab.

Fig. 3: Properties Window

c. Check Registry Entries

The registry location is "Hklm\system\currentcontrolset\enum\PCI\". Each subfolder must be clicked to display the information in the right hand pane.

Fig. 4: Registry Editor Window

The device can error out for a few reasons. Drivers/Firmware can make a device act erratic like its failing and trigger this message. The obvious other reason would be that the device is malfunctioning.

3. Troubleshooting Steps

After the failed device is indentified, you can start with troubleshooting.

1. Usually all firmwares of the system should be up to date before starting with next steps. We recommend using a bootable ISO file.
2. Reseat device (if possible) and restart. The SEL should be deleted before. Otherwise the old error message will be shown again.
3. Take the device out of the system and restart. The SEL should be deleted before. Otherwise the old error message will be shown again.
4. Test the device in another slot, if possible.