The Thunderbolt to HDMI adapter you are using has damaged your Thunderbolt port.
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The Thunderbolt to HDMI adapter you are using may have damaged your Thunderbolt port.
Also check your AC power outlets and the monitor/TV is plugged in to the same outlet and the polarized plug is plugged in correctly. Its possible you zapped your port by cross-wired AC between your system and display so the ground side was hot!
The Thunderbolt to HDMI adapter you are using has damaged your Thunderbolt port.
Also check your AC power outlets and the monitor/TV is plugged in to the same outlet and the polarized plug is plugged in correctly. Its possible you zapped your port by cross-wired AC between your system and display so the ground side was hot!
Get a outlet checker to check the outlets.