@ljpgulliver I also had the same problem did my head in till I grabbed a miniport cable and swapped it over from my old screen plasma to my reasonably modern tv. If you have another monitor maybe try it with that.
@vincentl did you get the pad to at some I'm can't on the 3plus I can co for just won't play rom tryed ps3 ps4 nes and keyboard they all navigate just won't play
@lou It's detailed in the 1st post where the Stretch image is posted:
WiiFi is disabled until wireless regulatory domain is set (Pi 3 B+ only)
The domain can be done through 'Raspberry Pi Configuration' (rc_gui), raspi-config or by setting 'country=' to an appropriate ISO 3166
alpha2 country code in /etc/wpa_supplicant/wpa_supplicant.conf.