Glad you managed to sort it, not a Windows fault though as once it gets to starting to load the OS it's way past the stage of entering the BIOS, some are a pain to get in to, especially if they are set up to skip various stages for a faster start up.
Yes Windows 7 is a right pain to install from scratch, at least with Windows 10 you can download a recent build and not be faced with as many updates.
What's the complaint from Windows about the Bluetooth driver?