bluetooth pairing problem and intel serial io i2c host controller 7a45 driver issue

[yassin1]

when i connect my wireless headphones via bluetooth they dont work i 've tried other headphones too i saw an error in intel bluetooth driver and intel serial io i2c host controller 7a45 driver it happened after downloading win 11 24h2 but then i rolled back to 23h2 i tried updating the bt drivers and the serial io driver but the problem still continues the bt driver doesn't show error anymore but the host controller 7a45 disappeared  from device manager i have a lenovo legion pro 5i gen 8 model 82WK009KAX

[DhannielM_Intel]

Hello yassin1,

Thank you for posting in the community. To assist you further with this matter, I have a few questions that will help clarify the issue. I understand you're experiencing difficulties connecting your wireless headphones to your laptop. There are some details I'd like to check first to provide an appropriate solution. Please answer the following questions:

1. Is your laptop brand new or has it been used for some time?
2. What is the model of your wireless headphones?
3. You mentioned downloading the 24H2 version; did the issue occur after a Windows Update?
4. Is your Bluetooth driver still visible in the Device Manager?
5. Have you reached out to Lenovo for further assistance, considering this laptop is an Original Equipment Manufacturer (OEM) device?
6. Have you tried connecting other wireless devices to test if they work?

Additionally, to gain a better understanding of your entire system, please use the System Support Utility (SSU). This tool will generate a text file compiling all your system information. You can follow the instructions at this link and send the text file here. How to get the Intel® System Support Utility Logs on Windows

Best regards,

Dhanniel M.

Intel Customer Support Technician

[yassin1]

1-no i've been using it for about  a year

2-samsung buds 2 pro

3- yes

4 - yes 

5- i have downloaded the serial io driver from their website that it only

6- yes, i had a samsung level u headphones and the same problem happened

[DhannielM_Intel]

Hello yassin1,

Thank you for providing your answers regarding this issue. First, I want to confirm that the version of the Serial IO driver you have installed is Intel_RPL_SIO_30.100.2237.26_22H2. Additionally, could you try installing the chipset driver for your laptop using the version RPL-HX_Chipset_10.1.46.3_Package_10.1.19199.8340?

Furthermore, please update your laptop's BIOS and firmware using the link provided by your OEM. If the issue persists after these updates, try disconnecting and unpairing all Bluetooth devices from your laptop. Then, perform a clean installation of your Bluetooth driver using both the OEM driver and the generic driver from the Intel website. Please follow these steps:

Before performing clean installation download the OEM driver and Generic driver first, and make sure that your laptop is disconnected in the Internet after downloading the drivers.

Follow this steps two times if after installing oem driver the issue still persist.

Step 1: Uninstall the Bluetooth driver.

1. Go to Device Manager.
2. Expand the Bluetooth category.
3. Right-click your Intel Wireless Bluetooth and choose to uninstall it.

• Make sure to the option to Delete the driver software for this device is selected.

1. Repeat steps A through D until the  the option to Delete the driver software for this device is greyed out.

Step 2. Restart your computer.

Step 3: Driver installation.

Locate the driver you downloaded. Right-click the file you downloaded and select the option to Run as administrator. For additional information refer to the video above.

After doing the following troubleshooting, please do let me know the outcome of performing this steps.

Best regards,

Dhanniel M.

Intel Customer Support Technician

[DhannielM_Intel]

Hello yassin1,

I'm following up to see if you've had a chance to review my previous response, which included recommendations for addressing this issue. Please let me know if the suggested solutions have resolved the problem.

Best regards,

Dhanniel M.

Intel Customer Support Technician

[DhannielM_Intel]

Hello yassin1,

As I haven't heard back from you, I will proceed to close this inquiry. If my recommendation did not resolve the issue, please contact your laptop's OEM for further assistance. Should you need additional help, feel free to submit a new question, as this thread will no longer be monitored.

Best regards,

Dhanniel M.

Intel Customer Support Technician