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Thread: USB host controller reset

  1. #1
    Join Date
    Jan 2009

    USB host controller reset

    i recently bought a new dell inspiron 1720 laptop, has a 360gb sata drive, 256mb geforce 8600 GO and 2gb of ram.when i plugged Western Digital 80 GB USB 2.0 External Hard Drive the laptop get switch off automaticaly.screen get black with no power no USB port working,Device Manager says that all is ok.Any recommendations and suggestions are appreciated.

  2. #2
    Join Date
    Apr 2008

    Re: USB host controller reset

    one class of devices requires a host controller reset to function properly after resume from S3 sleep, and another class of devices requires that the host controller not be reset after resume from S3 sleep. Therefore for one class of USB devices, there is no issue when the system resumes on from a sleep state; the system responds as normal. However, for another class of USB devices, resuming from the sleep state may result in the failure of the Windows Vista system to respond. These devices require that the host controller for the device be reset on resume from S3 sleep.

  3. #3
    Join Date
    Apr 2008

    Re: USB host controller reset

    This issue occurs if one or more of the following elements are corrupted and will not load during the boot sequence of the computer:
    Master boot record
    Partition tables
    Boot sector
    NTLDR file

  4. #4
    Join Date
    May 2008

    Re: USB host controller reset

    Making the registry change for a controller will affect all USB devices connected to that host controller, not just the behavior of the non-spec-compliant device. For maximum compatibility, this registry key should only be set where required. The majority of USB devices are spec-compliant with respect to their behavior when the system resumes from S3 sleep. The ForceHCResetOnResume registry key should be set only for devices which fail to respond when the system resumes from S3 sleep.

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