USB/Bluetooth devices disconnection after Mac standby

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  Thanks for posting your question on the Microsoft community.

  Thank you for details on the issue.

  This problem may occur because of settings or corrupted device driver.

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  Well, I never really heard this about WIFI disconnects after the ejection of a USB drive. That's really curious.
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  Hello

  ·        What is present in the USB key?

  ·        Since when are you facing this problem?

  ·        Remember to make changes to the system?

  I suggest you follow the steps mentioned in the article below and check if the problem is resolved.

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  Thanks and regards.

  Thahaseena M
  Microsoft Answers Support Engineer.
  Visit ourMicrosoft answers feedback Forum and let us know what you think.

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  Hi jimafia,

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• Bluetooth device driver not found after accidental uninstall (Win7 64 bit)

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  At the hope that someone had a suggestion for what else to try, or maybe how to find out what that exactly that I deleted by choosing 'delete the driver for this device '.

  Thanks in advance!

  Edit:

  Just in case it helps, I noticed that the following folder is created at the time of uninstal and reinstal, containing calisto.inf, calisto. PNF and Calisto.cat

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  Hello mvheim,

  Try this.

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  Any thoughts why? This has worked in the past, but not at the moment. I have not tried to restart my machine.

  Hi JVogue,

  Looks like you are unable to select your bluetooth device paired as a source of audio output to system preferences. I would start by pairing not your device:

  Remove a device from your Mac

  If you want to remove (désapparier) a device from the list of devices on your Mac, follow these steps:

  1. Choose the Apple menu > System Preferences, and then click Bluetooth.
  2. Place the pointer on the device you want to remove, and then click the button which appears next to the device name.

  Note: After you delete a Bluetooth device, you need to repeat the pairing process, if you want to use again.

  From: using a Bluetooth mouse, keyboard or trackpad with your Mac

  When that is done, start in safe mode. This will clear some system-level caches and perform a disk check and repair if necessary:

  Follow these steps to start in safe mode.

  1. Start or restart your Mac.
  2. As soon as you hear the startup tone, hold down the SHIFT key.
  3. Release the SHIFT key when you see the logo Apple appears on the screen.

  After the Apple logo appears, this may take longer than usual to reach the login screen or your office. This is because your Mac performs a check of directory of your drive to boot in safe mode.

  To leave safe mode, restart your computer without pressing any keys during startup.

  From: try safe mode if your Mac does not start-up

  Once you log in safe mode, that's all you need to do there, then restart your computer as usual using Apple > restart. Pair the device again, and then check that you can select as output. Thank you for using communities of Apple Support, all the best!