On a fresh installation of the Windows 10 Preview, I had two of our PCIe audio cards in the machine, one for DAB radio capture (PCI device ID 3204) and the other for FM capture (PCI device ID 3101). From Device Manager, I first installed the DAB card driver. This all went well, as seen in the setupapi.dev log file... >>> [Device Install (DiShowUpdateDevice) - PCI\VEN_1BC9&DEV_3204&SUBSYS_32041BC9&REV_00\4&2F9FC9E9&0&0008] >>> Section start 2014/11/21 15:47:12.098 ... ndv: {Update Driver Software Wizard exit(00000000)} <<< Section end 2014/11/21 15:47:24.958 <<< [Exit status: SUCCESS] With the DAB card happily running, I then started installing the driver for the FM card but this is what happened: >>> [Device Install (DiShowUpdateDevice) - PCI\VEN_1BC9&DEV_3204&SUBSYS_32041BC9&REV_00\4&1C1C19EA&0&00E0] >>> Section start 2014/11/21 15:53:19.645 The location string at the end is for the slot the FM card was in, but it's using the PCI vendor, device and subsystem ID from the DAB card! When it tried to start the DAB driver on the FM card, the system not surprisingly blue-screened. After a reboot, I went back into Device Manager and had another go at installing the FM driver (still with both cards in the machine and with the DAB card happily running)... >>> [Device Install (DiShowUpdateDevice) - PCI\VEN_1BC9&DEV_3101&SUBSYS_31011BC9&REV_00\4&1C1C19EA&0&00E0] >>> Section start 2014/11/21 16:00:50.335 This time the vendor, device and subsystem ID are correct (note the location string at the end is the same as the one above where it got the PCI identifiers wrong) and the FM installation completed successfully: ndv: {Update Driver Software Wizard exit(00000000)} <<< Section end 2014/11/21 16:01:04.101 <<< [Exit status: SUCCESS] This is the first time I've ever seen a system muddle up the PCI identifiers of cards like this. Hopefully it's just a quirk of the preview release. Jeff Pages Innes Corporation ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/