Bluetooth Not Working Even After I Replaced New Bluetooth Wifi Card Macbook Pro 15 Retina Display Mid 2014

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Hi Guys Bluetooth is not working on my Macbook Pro Retina 2014 I installed new OS I bought new Bluetooth Wifi Card and also tested from another working Mac but still No bluetooth . BLUETOOTH NOT AVAILABLE on the desktop and NO INFORMATION FOUND on the system report

Can you Help ? I am new in this forum but always use IFixit to repair macs

While not very intuitive lets replace the I/O board and its cable: MacBook Pro 15" Retina (Late 2013-Mid 2014) Right I/O Board & MacBook Pro 15" Retina (Late 2013-Mid 2014) I/O Board Data Cable. Here’s the needed guide MacBook Pro 15" Retina Display Mid 2014 I/O Board Replacement The Airport board uses two different interfaces! The PCI for the WiFi and USB for the Bluetooth services. The I/O board shares the same USB hub service so if it has a problem it can effect the Bluetooth connection.