Update:
I got it working, after everything described below I gave up and stabbed the X3 reset. It reverted to 44KHz/24bits
in the LCD and started playing, now shows 192KHz/24bits and still plays !
Okay got a little further. Windows reported one problem as the X3 was not USB 3.0 compatible, and suggested moving to a 2.0 port which cleared that error. Another problem was being reported as an incorrect hash in the driver & windows kept disabling it.
I needed to turn the signed driver checking off again and then tell device manager to update the X3 driver from files on my computer.
I can now select the X3 or the speakers on the playback devices box.
However while the little sound level bars show music is playing that should be going to the X3, there is no sound coming from the X3.It is in Dac Mode and the audio is turned up enough I can here it okay in normal mode.
When I turn the X3 on or off, or unplug the USB cable the computer sees this and removes the X3 option from playback devices,or adds it back.
But no sound output from the X3 BTW this computer worked fine with an E10.
Any suggestions or help ?
P.S. I can start a song playing w/ windows media player and hear nothing from the X3, then unplug the USB cable and the laptop's internal speakers come on. When the USB cable is plugged back in, the speakers again go silent as they should.
P.S.2 Following another X3 DAC update thread on here, per post 91 of 100 I was able to select the X3 properties in the PC control panel and change them to 192/24, which caused the X3's LCD to reflect the same setting (was 44/24). So they are connected correctly and talking, but no sound comes from the X3 in DAC mode using windows, AIMP3 or VLC.