My Macbook Pro 13" (mid 2012 non-Retina) won't connect to any of my external displays. Macbook Pro specs: i5 16GB RAM 250GB SSD Displays: Dell S2415H (HDMI input) Samsung S24F350FHM (VGA input) Tried two different adapters: Mini-DP to VGA, Mini-DP to HDMI. Both don't work. In System Information, Thunderbolt hardware is present but it says "no device connected" although it's connected to the display. What I've tried so far: SMC reset NVRAM reset Re-installed High Sierra Downgraded to Sierra But nothing seems to work. Any ideas?