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Benkm7321w

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February 11th, 2026 15:42

KM7321W mouse and keyboard bluetooth not reconnecting after power toggle

KM7321W keyboard and mouse combo Bluetooth REconnection Failure on Inspiron 14 7440

Issue: Keyboard and mouse lose Bluetooth connectivity with Inspiron laptop after a power toggle on mouse or keyboard. I also have a similar issue when switching keyboard and mouse back and forth to another channel (meaning connecting to another computer).

The combo has 3 channels

Channel Configuration:

  • Channel 1: USB dongle (works 100% on Inspiron)

  • Channel 2: Bluetooth to Inspiron (problematic)

  • Channel 3: Used with other Samsung system Windows 10 (works perfectly)

Only way to reconnect after losing connectivity, is to toggle off/on Bluetooth on Inspiron laptop.



The following Troubleshooting steps have already been done:

  • Power Management: Disabled "Allow computer to turn off" for Bluetooth adapter and HID devices (in device manager).

  • BIOS/Drivers: installed latest BIOS (from dell support assist),and Bluetooth drivers(from intel support assistant) for Inspiron 7440.

  • Updated mouse and keyboard firmware (dell peripheral manager)

  • Clean Pairing: Removed all Bluetooth mouse and keyboard pairings from Inspiron, reset KM7321W to channel 2 pairing.





DELL-Jesse L

Moderator

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17.9K Posts

February 12th, 2026 06:21

Contact Dell GHN (Get Help Now) chat technical support Monday through Friday. Click the blue "Get Help Now" on the right to start a private live chat session. Share the private Service Tag with them so that they can verify the ownership and warranty status. This will also generate a unique Technical Support case for your unique Service Tag. If already out of warranty, click here for the Dell out of warranty offering.

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