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Open Device Manager to see if it shows any BT devices present. You need to have a WiFI device installed that is BT capable.
Again. Post a screenshot of Device Manager. If you do not have WiFi installed, you will not have Blue Tooth.
Try reinstalling the Wifi/bt drivers. See this for how to do a Clean Install for the wifi drivers. Clean Installation of Wireless Drivers
Windows needs the Intel WIFI drivers installed and your WIFI adapter also needs to use BlueTooth. Helps if you post the wifi adapter info.