Bluetooth grayed out in preferences

In system preferences bluetooth is permanently grayed out, I can't check it on. Same with the bluetooth symbol up in the munu bar.
If I go to mouse preferences, and can click on the button there to turn on the bluetooth, and it asks for my login name and password. I enter them, and then bluetooth is on. But then if I pick up my MacBook and walk away, breaking the connection with the mouse, bluetooth is again grayed out. --Until I go to mouse preferences and do the same password routine again.
What do I have to do to correct this?
If going into X11 will get the job done, then someone tell me exactly what to type.
Thanks.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

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Message was edited by: freeman339

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