How can I reset a Bluetooth?

The bluetooth pin number is actually just to make sure both sides enter the same code. If for example, you're trying to connect to your computer, try using 1234 on each device. Or 0000, or whatever number you like.

Certain devices like bluetooth headsets will specify a code to use. Almost always 0000 or 1111.

HI, TRY CODE 8888 ON YOUR MOBILE PHONE TO CONNECT THIS BLUETOOTH DEVICE BTHF0082. HABIB

Bluetooth Passcode key is the key which you assign, so if it's the first connection between your computer and bluetooth device, give anything like 11 or 11111 or 0000 whatever that suits you and you'll need to give the same code on both the computer and the bluetooth device. This is only for security which means to securely connect between the two devices only not with the unauthorized devices or unknown connections.

Good luck.

Thanks for using FixYa.

hi there!

While the specific user interfaces implemented by manufacturers may differ from device to device, there are still some very basic steps to go through in connecting two devices for the first time. Users should always conduct the pairing process in a secure environment.

Charge the Devices
If the devices are new Bluetooth devices, often they must be charged before they can connect or turn on. This is particularly true of new Bluetooth headsets, which must be charged before use.
Power Up the Devices
Power up the devices you are trying to pair. With some devices, like Bluetooth wireless headsets, powering up the device also initiates the pairing process.
Turn the Bluetooth Functionality On
The Bluetooth functionality in a device may or may not be turned on when you receive the device. For many computers, users will need to turn the Bluetooth radio on from the control panel or system preferences.
Make the Devices Visible
As a security measure, some devices allow the Bluetooth functionality to be off, hidden, or visible. When trying to connect devices, users should make the devices visible so the devices can discover one another. After the devices are paired, users can set the devices to hidden if they have concerns about their devices being discovered by others.
Place Both Devices in the Connection Mode
After both devices are charged, powered up, and the Bluetooth functionality is turned on, each device needs to initiate a communication session. Typically, in a connection between two devices, one device acts as the “host” and the other device acts as the ”guest.” The device in the host role is the one with the user interface from which most of the connection setup will take place. A device can be in the host role with one device and in the guest role with another device. For example, in a phone and wireless headset pairing, the phone is the host. However, in a phone and laptop pairing, the laptop is the host.
Enter the Passcode
After the two devices have discovered one another, the user will be asked to enter in a passcode in one if not both of the devices. In some cases, like with wireless headsets, the passcode is a fixed passcode assigned to the headset by the manufacturer. In those cases, the user enters the assigned passcode into the host device. The user will find this passcode in the user manual. In other cases, the user will be able to enter in his/her own passcode. In these cases, the user will enter the passcode once into each device. It is highly recommended that users employ an eight character alphanumeric passcode for the one-time pairing process. After the passcode is entered, the devices will validate one another and complete the establishment of a trusted connection.

Deleting or Disconnecting Trusted Devices
When should a user delete or disconnect a trusted device? If one of your Bluetooth enabled devices is lost or stolen, you should unpair that device with all the devices to which it was previously paired.
How do you unpair or delete a trusted device? For devices like a mobile phone or computer, the user should go into the device connectivity settings and find the list of trusted devices. The user should then have the option of adding a new device or deleting a trusted device. Highlight the device you want to delete and push the delete button. A device like a keyboard or mouse, which only has a button or switch as a user interface, can only connect to one device at a time. To delete its previous trusted device, the mouse or keyboard just needs to be connected to a new device

Or you can try this:

Bluetooth Mobile Phone to Bluetooth Personal Computer

1. Power up both the mobile phone and the personal computer.
2. On the PC, open up the control panel and find the Bluetooth Device Wizard. This will assist the user in setting up a Bluetooth connection between the PC and trusted devices.
3. Ensure the Bluetooth connectivity is turned on in the PC.
4. Find the connectivity settings of the phone. Make sure Bluetooth connectivity is on and visible.
5. On the PC, choose to find and add a specific Bluetooth device.
6. Of the devices found, pick the mobile phone with which to pair.
7. PC will generate a PIN code.
8. Mobile phone will ask if you wish to be connected to the PC.
9. After the user answers in the affirmative, the user will be prompted for the PIN code on the mobile phone. Enter the PIN code into the mobile phone, which the PC generated.
10. Allow devices to complete the establishment of a trusted link.
11. If prompted on the PC to choose the Bluetooth services, the user may have several services available. The user may be able to sync the phone and PC. The user may be able to set up dial-up networking (DUN) preferences so that the user can use the mobile phone as a modem for the PC over the Bluetooth connection. The user may be able to transfer files, like pictures or business contacts, between the mobile phone and the laptop.
12. After choosing which services the user wishes to enable, the user can then finish the connection and exit the setup on the PC.

better yet go to this website: http://www.bluetooth.com/Bluetooth/Products/Devices/Generic_Pairing_Instructions.htm