8 of the 11 cards were not seated properly.

However, after re-seating, there is still no display and no lights on my router from the Ethernet connection.
I've already done a second pass at re-seating, and the internal Ethernet and ribbon cable are connected fine...any other ideas?
Since the display isn't lit, does that suggest a power terminal isn't connected or that the main board is fried?

At least the fans make an impressive sound.

I got my S2 today.
However, the display does not light up. Although the fans do turn on and I can see red lights inside it.
Also, the Ethernet is not detected by my router.
So the consensus is that I should open it up and see if anything needs to be reseated? Will this void the warranty?
Thanks!
Volgon
Check that all cards and cables are seated properly.