Dell Silent Keyboard KB555 seemingly in a loop of disabling then enabling while connected through Bluetooth.

Question

Dell Silent Keyboard KB555 seemingly in a loop of disabling then enabling while connected through Bluetooth.

Michael Bridges 0

I've had the Dell Silent Keyboard KB555 for quite some time now, however I took a small hiatus from using it for a while and came back to find it almost completely unusable, at least in its Bluetooth mode. I connect it to my laptop through Bluetooth and the Number Lock Light begins continuously flashing every couple seconds as well as the Bluetooth connection light, and my inputs seem to only be working at random, I press the Windows Key and the Start menu flashes for a brief second as if the key recognized it being pressed twice. I try to type into the start menu search bar to no avail, then reopen it to find the search bar full as if I'd held down a key. I tried connecting it to my phone to ensure the keyboard itself worked fine, and sure enough it worked flawlessly while paired with a different device. So I believe the cause is rooted to the Bluetooth connection with my laptop, however I've lost the dongle to the keyboard so I can't prove its exclusive to its Bluetooth mode. One thing I found interesting was opening Device Manager, where I found it constantly refreshing in sync with the Bluetooth and Number Lock lights on my keyboard, the keyboard seems to be stuck in a loop of adding "HID-compliant consumer control devices" as well as "HID-compliant vendor-defined devices". My current count is 11 for each, which means they're being added in pairs. The last bit of information I have to share is that the Dell Peripheral Manager doesn't even recognize the Keyboard as being connected, while my Windows Device Manager and Bluetooth menu both do. I haven't the first clue on how to fix this and I would really like some help.

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Answer 1

Vikki-T 7,310 Microsoft External Staff Moderator

Hi Michael Bridges,

Thanks for sharing all those details. The fact that the keyboard works properly when paired with your phone is a very useful clue.

Before going further, could you please confirm a few things?

What is the exact laptop model?
What Bluetooth adapter is listed under Device Manager > Bluetooth?
Are other Bluetooth devices stable on this laptop, such as a mouse, earbuds, or phone?
Did this begin after any Windows update, driver update, BIOS/firmware update, or after the keyboard had not been used for a while?
Are you using any other wireless keyboard/mouse software or Bluetooth management tool besides Dell Peripheral Manager?

In the meantime, please try the following:

Replace or fully charge the keyboard batteries: Please replace the batteries or fully charge it, then try pairing again.
Test with other Bluetooth devices disconnected: Temporarily disconnect other Bluetooth devices from the laptop, especially wireless mice, earbuds, controllers, or other keyboards. Then pair only the Dell KB555 and check whether the connection becomes stable.
Check Bluetooth power saving: Open Device Manager > Bluetooth, right-click your main Bluetooth adapter, then select Properties. If you see a Power Management tab, uncheck “Allow the computer to turn off this device to save power.” Restart the laptop afterward.
Check Windows power mode: Go to Settings > System > Power & battery and temporarily set Power mode to Best performance. Also make sure Battery saver/Energy saver is turned off while testing the keyboard.
Try a full shutdown instead of a normal restart: Shut down the laptop completely, unplug the charger, wait briefly, then power it back on.
Start Windows in Clean Boot mode: You can try a Clean Boot to start Windows with minimal third-party services, then test the keyboard again.
Reinstall Dell Peripheral Manager or update Dell firmware: Since Dell Peripheral Manager does not detect the keyboard even though Windows does, please check Dell’s support page for the latest Dell Peripheral Manager version and any available firmware update for the KB555. If Dell Peripheral Manager is already installed, uninstalling and reinstalling it may also help.
Check the laptop manufacturer’s support page: Please install the latest Bluetooth, wireless, chipset, and BIOS/firmware updates for your exact laptop model from the laptop manufacturer’s website.

While my initial response may not fully resolve the issue, I truly appreciate your cooperation as we work together toward identifying the most effective solution. Thank you so much for your understanding.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Vikki-T 7,310 Reputation points Microsoft External Staff Moderator

2026-06-16T13:16:48.6033333+00:00

Hi Michael Bridges,

It has been a while and I am writing to see how things are going with this issue.

Have you had a chance to check the replies provided?

Any update would be appreciated.
Michael Bridges 0 Reputation points

2026-06-17T09:49:26.3966667+00:00
Hi there, very sorry for the delay between updates, I didn't realize someone had replied until now. To answer your questions:

My laptop model is an HP Omnibook X Flip Laptop 14-fm0xxx

I'm not entirely sure how to identify which device listed is the bluetooth adapter, however my best guess is it's the Intel(R) Wireless Bluetooth(R)

The keyboard hadn't been used for a period of what I would guess is one to two months, and I am near certain there was a Windows update within this interval, however I can't identify which specific update.

To my knowledge, there is no other Bluetooth management software on my laptop other than Dell Peripheral Manager, and another important detail could be that Dell Peripheral Manager wasn't installed on my device when this issue arose, so I'd doubt the problem stems from that software. As for fixes, this is what I've tried:

I have put completely fresh batteries into the keyboard to no avail.

I have tested the keyboard with no other bluetooth device connected to no avail.

Energy saver or the power mode don't seem to affect the problem.

This laptop has been shut down between attempted uses of the keyboard many times to no avail.

I have not attempted a Clean Boot and will do so shortly after this update.

The Dell Peripheral Manager has been updated to its latest version, and although Dell offers a firmware update utility for the KB555 keyboard, it appears to need the keyboard connection through dongle, or perhaps it doesn't treat the keyboard's intermittent connection as a real connection to update the firmware over.

If the clean boot does not work I will look into updating the bluetooth and wireless firmware for the laptop, I doubt the chipset or BIOS is involved in this issue however I will also attempt these if all else fails. Thank you for your help, hopefully we can identify the problem through process of elimination.
Vikki-T 7,310 Reputation points Microsoft External Staff Moderator

2026-06-17T12:50:07.67+00:00

Hi Michael Bridges,

Thank you for the detailed update. I appreciate you taking the time to test those items and report back with the results.

I'm very interested to hear the result of the Clean Boot test, as that will help determine whether a background service or application is contributing to the behavior.

In addition, when you have a chance, could you also confirm one detail that may help narrow this down further? Have you tested any other Bluetooth devices (such as headphones, earbuds, a mouse, or your phone) with this HP Omnibook recently, and if so, do they remain connected normally without disconnecting or reconnecting?

If the Clean Boot does not change the behavior, I agree that updating the Bluetooth and wireless drivers directly from HP's support page would be a worthwhile next step. Even though chipset and BIOS updates may seem unrelated at first glance, they can sometimes include fixes that affect how integrated wireless hardware communicates with Windows.

Thank you again for your thorough troubleshooting so far.
Vikki-T 7,310 Reputation points Microsoft External Staff Moderator

2026-06-18T13:31:58.2033333+00:00

Hi Michael Bridges,

Is there any update from you?

If yes, please feel free to let us know.
Michael Bridges 0 Reputation points

2026-06-21T23:18:53.6133333+00:00

Hi Vikki, it seems the issue has been resolved. Although, I'm frustrated because I have no idea how it came to fix itself. I had left the keyboard and my laptop together in my laptop bag over the course of the week and put off the clean boot and updating bluetooth firmware. I just took the keyboard out of the bag again to do more troubleshooting and it works just fine now. If it's any help, my keyboard was switched on when I took it out of the bag so it was on for an extended period of time, my laptop was also in sleep mode I believe so maybe the keyboard paired with the laptop and the extended period of connection forced it to work properly?
Vikki-T 7,310 Reputation points Microsoft External Staff Moderator

2026-06-23T08:49:16.45+00:00

Hi Michael Bridges,

That's great news! While I completely understand it's a bit frustrating not knowing exactly what fixed it, I'm glad to hear the keyboard is working normally again.

Since everything is working now, I'd avoid making further changes unless the issue returns. If it does come back, the Device Manager refresh behavior and repeated HID device creation will still be valuable clues for future troubleshooting.

Thank you for coming back and sharing the outcome. I'm happy to hear the KB555 is behaving itself again, and I hope it continues to work reliably going forward!

Answer 2

The behavior indicates a Bluetooth/driver issue on the laptop, not a hardware fault with the keyboard. Use these steps on the Windows 11 PC to stabilize Bluetooth and HID devices:

Run the Bluetooth troubleshooter
This can automatically fix common Bluetooth configuration problems.
1. Select Start > Settings > System.
2. Go to Troubleshoot > Other troubleshooters.
3. Find Bluetooth and select Run.
4. If it reports issues and fixes them, test the keyboard again. If it reports no fix, close it and continue.
Remove the keyboard from Bluetooth and re‑add it
This clears the pairing profile that may be corrupted.
1. Select Start > Settings > Bluetooth & devices.
2. In the list under Mouse, keyboard & pen (or similar), select the Dell keyboard.
3. Choose Remove device.
4. Turn Bluetooth off, wait ~10 seconds, then turn Bluetooth on again.
5. Select Add device > Bluetooth, put the keyboard in pairing mode, and pair it again.
Turn Bluetooth off and on, then restart the PC
This helps if the radio or services are stuck.
1. Go to Settings > Bluetooth & devices. Turn Bluetooth off, wait 10 seconds, then turn it on.
2. Select Start > Power > Restart and test the keyboard after reboot.
Update Bluetooth drivers
Outdated or incompatible Bluetooth drivers are a common cause of unstable connections and repeated HID device add/remove cycles.
1. In the taskbar search box, type Device Manager and open it.
2. Expand Bluetooth and select the Bluetooth adapter (often includes the word “radio”).
3. Right‑click it and select Update driver > Search automatically for updated driver software. Complete the wizard and restart if prompted.
4. If no newer driver is found, download the latest Bluetooth driver from the laptop manufacturer’s support site and install it. If it’s an .exe, run it; if it’s .inf/.sys, use Update driver > Browse my computer for driver software and point to the folder, then restart.
Uninstall and reinstall the Bluetooth adapter
This can stop the constant Device Manager refresh and repeated HID device creation if the driver stack is corrupted.
1. Open Device Manager.
2. Expand Bluetooth.
3. Right‑click the Bluetooth adapter and select Uninstall device. Confirm Uninstall.
4. Shut down the PC completely (not just restart). Wait a few seconds, then power it back on. Windows will attempt to reinstall the Bluetooth driver automatically.
5. If it does not reinstall, in Device Manager press Alt+A > Scan for hardware changes to force detection.
Clean up hidden/old Bluetooth and HID devices
Old or faulty HID/Bluetooth entries can contribute to repeated connect/disconnect loops.
1. In Device Manager, select View > Show hidden devices.
2. Under Bluetooth and Human Interface Devices, look for entries with a warning triangle or obviously stale/duplicate Bluetooth/HID devices.
3. Right‑click and Uninstall device for those problematic entries.
4. After cleanup, remove and re‑pair the keyboard again as in step 2.
Check for Windows Updates
A recent update may have introduced or fixed Bluetooth issues. Ensure the system is fully updated.
1. Select Start > Settings > Windows Update.
2. Select Check for updates and install everything offered, then restart and test.

If the keyboard continues to work normally with other devices (like the phone) but not with this laptop after these steps, the issue is almost certainly in the laptop’s Bluetooth stack/driver or OS configuration. In that case, focus on updated OEM Bluetooth drivers and, if needed, contact the laptop manufacturer’s support with details about the repeated HID device additions and Device Manager refresh behavior.

References: