Windows audio device graph isolation high cpu usage

[Rico007]

Windows audio device graph isolation process takes half of cpu for twenty or even more minutes, sometimes it can take almost 99 percent of cpu power so it makes impossible to work on laptop, also it can appear while laptop on battery and it takes whole charge, I've got this problem for several monts. Driver was installed from hp support web site, there is only one audio driver for my laptop. I've got a bang & olufsen audio device. So how can I resolve this problem and save all benefit of this audio device?

[Echo_Lake]

@Rico007
Thank you for posting on HP Support Community

I have a few troubleshooting steps we could try to fix the issue:  

Let's perform Windows Update and HP Support Assistant:

To check for updates now, select the Start button, and then go to Settings  > Update & security  > Windows Update, and select Check for updates.

Install updates from HP Support Assistant: Go to Download HP Support Assistant to install the tool.

1. To open HP Support Assistant, double-click the HP Support Assistant icon .
2. Click My devices in the top menu, and then click Updates in the My PC or My notebook pane.
3. Click Check for updates and messages to scan for new updates.
4. Review the list of updates. Updates with a yellow information icon are recommended. Updates with a blue information icon are optional.
5. Click the update name for a description, version number, and file size.
6. Select the box next to any updates you want to install, and then click Download and install.

Use the troubleshooting tool in Windows

The audio troubleshooting tool in Windows can automatically fix common audio recording and audio playback problems with your computer. Run the troubleshooting tool using the following steps:

• In Windows, type find and fix audio into Search, or right-click the speaker icon  in the taskbar and select Troubleshoot sound problems.
• Select Find and fix audio playback problems or Find and fix audio recording problems from the Search results.
• Click Next.
• Select the device you want to troubleshoot and click Next.
• Wait while the troubleshooter detects problems and makes changes (or prompts you to make changes).
• When the troubleshooter is done, the Troubleshooting has completed page is displayed, listing any problems found and what changes were made to the computer.
• Click Close.
• If a recommended action is displayed, select Apply this fix.

Hope this helps! Keep me posted for further assistance.
If I have helped you resolve the issue, feel free to give me a virtual high-five by clicking the 'Thumbs Up' icon below, Followed by clicking on "Accept as solution" from the drop-down menu on the upper right corner,Thank you for posting in the HP Support Community.  Have a great day!

[Rico007]

Unfortunately this doesn't solve my problem, the process apears sometimes again and takes at least half of cpu

[Echo_Lake]

@Rico007

I appreciate your efforts to try and resolve the issue.  As you've performed relevant troubleshooting steps and the issue persists. I would request you to contact our Phone Support and our Support Engineers should be able to Remote into your computer and sort this out.

HP Support can be reached by clicking on the following link:

• Click on this link – www.hp.com/contacthp/
• Select the product type.
• Enter the serial number of your device or select let HP detect your product option.
• Select the country from the drop-down.
• You should see the HP support number or Chat option listed

Please feel free to contact us here anytime you need any further assistance.

[Clem100]

I had the same issue and downloaded and installed a previous version of the driver SP91517 and no issue now