ifyou see no lights on the EMM don't worry about EV diagnostic for now. find out why your EMM does not power up. Check all connections related to B+and grd from the battery to engine. Cable crimps . Easy stuff to track first.......... then focus on the EMM power source. see wire diagram in the manual did you download it ??

it MUST have B+ on purple from the front key ON.
I recently did load a defective PC with W10 + EV diag and I doubt BIOS settings are your problem.

it MUST have B+ on purple from the front key ON.
I recently did load a defective PC with W10 + EV diag and I doubt BIOS settings are your problem.
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