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Windows PC Won't Connect to Bluetooth Mouse or Keyboard: Fix It Step by Step

📅 23 July 2026 ⏱ 4 min read 🔧 PC Repair

You sit down at your PC, move the mouse — nothing. Or you try to pair a new Bluetooth keyboard and Windows simply refuses to find it. It's one of those maddening little problems that wastes a whole morning if you don't know where to look. The good news: most Bluetooth connection failures on Windows have a straightforward fix, and you can usually sort it yourself in under ten minutes.

Step 1: Start With the Obvious (Seriously)

Before diving into settings, check these first. They solve the problem more often than you'd think:

Step 2: Check That Bluetooth Is Actually On in Windows

This catches people out more than you'd expect, especially after a Windows update.

  1. Click the Start button, then open Settings (the gear icon).
  2. Go to Bluetooth & devices.
  3. Make sure the Bluetooth toggle is switched On.
  4. If you don't see a Bluetooth option at all, your PC may not have Bluetooth built in — see Step 6 below.
Windows Bluetooth settings panel open on a laptop screen

Step 3: Remove the Old Pairing and Start Fresh

Windows sometimes holds onto a corrupted or stale pairing entry. Clearing it out often fixes the problem instantly.

  1. In Bluetooth & devices, find your mouse or keyboard in the list of paired devices.
  2. Click the three dots (…) next to it and choose Remove device.
  3. Now put your mouse or keyboard back into pairing mode (hold its pairing button until the light flashes).
  4. Click Add device > Bluetooth in Windows and let it find the device fresh.

Step 4: Run the Windows Bluetooth Troubleshooter

Windows has a built-in troubleshooter that fixes a surprising number of driver and service problems automatically.

  1. Open Settings > System > Troubleshoot > Other troubleshooters.
  2. Find Bluetooth and click Run.
  3. Follow the prompts and let it apply any fixes it finds.

If it reports that the Bluetooth Support Service wasn't running, that's a common cause — the troubleshooter will restart it for you.

Step 5: Update or Reinstall the Bluetooth Driver

A corrupted or outdated Bluetooth driver is a frequent villain, especially after a major Windows update.

  1. Right-click the Start button and choose Device Manager.
  2. Expand the Bluetooth section. If you see a yellow warning triangle, that confirms a driver problem.
  3. Right-click your Bluetooth adapter and choose Update driver > Search automatically. Let Windows look online.
  4. If that doesn't help, right-click again and choose Uninstall device, then restart your PC. Windows will reinstall the driver on reboot.

Still seeing that yellow triangle after a reinstall? That's a stronger sign the Bluetooth chip itself may have an issue — or the driver needs to be downloaded directly from your PC manufacturer's website.

USB Bluetooth dongle plugged into a laptop port

Step 6: No Bluetooth at All? You May Need a USB Adapter

Many desktop PCs and some older laptops don't have Bluetooth built in. If Bluetooth doesn't appear anywhere in Device Manager or Settings, this is likely the case. A small USB Bluetooth adapter (sometimes called a dongle) costs around €8–15 and plugs into any spare USB port — Windows usually recognises it within seconds. This is a perfectly good permanent solution, not a workaround.

A Quick Comparison: Common Fixes at a Glance

Symptom Most likely cause Fix
Device won't pair at all Dead batteries / not in pairing mode New batteries + hold pairing button
Was working, suddenly stopped Corrupted pairing entry or driver Remove & re-pair; update driver
Bluetooth toggle missing No Bluetooth hardware / driver missing USB dongle or reinstall driver
Connects but disconnects often Low battery or interference Fresh batteries; move closer to PC
Person using a wireless Bluetooth mouse with a desktop computer

When to Stop and Get It Looked At

If you've worked through all of the above and the Bluetooth adapter still doesn't appear in Device Manager — even with a USB dongle — or if Windows crashes when you try to use Bluetooth, it's worth getting a professional to take a look. There may be a hardware fault on the motherboard or a deeper driver conflict that needs proper diagnosis. We see these cases regularly at Campoverde Repair, and they're usually sorted quickly.

Not sure whether the problem is Bluetooth or something else slowing your machine down? Have a read of 5 warning signs your laptop needs a repair — it covers several symptoms that often appear together.

Summary

Bluetooth gremlins are annoying but rarely serious. Work through the steps in order: batteries → Bluetooth on → re-pair → troubleshooter → driver update → USB dongle if needed. Most people are back up and running well before they reach step five. If you're not, you know where to find us.

FAQ

Why does my Bluetooth mouse keep disconnecting on Windows?

The most common causes are low batteries, power-saving settings turning Bluetooth off, or interference from other wireless devices. Try fresh batteries first, then go to Device Manager, right-click your Bluetooth adapter, choose Properties > Power Management, and untick 'Allow the computer to turn off this device to save power'.

My keyboard connected once but Windows won't find it again — why?

Windows probably has a stale pairing entry stored. Go to Bluetooth & devices, remove the keyboard from the list, put the keyboard back into pairing mode (hold its button until it flashes), then add it again as a new device.

There's no Bluetooth option in my Windows Settings — what does that mean?

It means your PC either has no Bluetooth hardware built in, or the driver for it has gone missing. Check Device Manager for a yellow warning triangle under Bluetooth. If there's no Bluetooth section at all, a USB Bluetooth adapter (dongle) is the simplest solution.

Can a Windows update break my Bluetooth connection?

Yes — it happens. Major Windows updates occasionally replace or corrupt Bluetooth drivers. If your mouse or keyboard stopped working right after an update, go to Device Manager, uninstall the Bluetooth adapter, restart the PC, and let Windows reinstall the driver. If that doesn't work, check your PC manufacturer's website for the latest driver.

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