実際には電源入れても冷却ファンが回らないなーと思ってケーブルを軽く引っ張ってみたら、コネクタから線がひっこ抜けたってかんじですね。
この手の圧着ミスはこの製品には多いみたいです。

What actually happened is that I was wondering why the cooling fan wasn't spinning even after I plugged it in, so I gave the cable a light tug and pulled the wire right out of the connector. It seems this sort of crimping error happens a lot in these products.