Here is a list of steps you can take to troubleshoot why your laptop is not connecting to a Bluetooth speaker:

1. Check if the Bluetooth speaker is switched on.
2. Check if the settings of the laptop Bluetooth is on.
3. Restart your laptop and the Bluetooth speaker.
4. Check if the Bluetooth speaker is connected to any other device.
5. Move the laptop and the speaker closer together, check to make sure that they are close enough to connect.
6. Reset the speaker and pair it with your laptop again.
7. Make sure that the laptop software is up to date.