Intel Q35 display driver (signed by MS) - does not reconnect signal after disconnection


  • Hi. I have been using the Intel Q35 internal display chip on my Dell PC a long time. I found that if I removed the igfxpers.exe which seem to do automatic-checking for new displays that are connected.

    When igfxpers.exe was running on Vista, I could disconnect a monitor and then reconnect it and it did not find the signal. But if igfxpers.exe was not running, I could remove a monitor and then reconnect it and it worked fine.

    However, in Windows 7, this behavior is not the same. Whatever I do, I cannot reconnect a monitor. I always have to reboot the computer to make it detect the signal.

    Do anybody have any clue for fixing this? Or do I have to reinstall Vista?

    Tuesday, November 01, 2011 8:19 PM


  • Hi,


    Please logon with Clean Boot,  update the Q35 driver, also update BIOS to the latest version for test.


    If the issue persists, I suggest to contact Inter Q35 Chipset support for further help:


    Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.


    Thank you for your understanding.



    Leo   Huang



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    Thursday, November 03, 2011 2:33 AM