USB ports not working until reboot

X

X4V

New Member
Hi Guys,

Every now and then I have a problem where Vista displays the message "USB device not recognized" when I plug my iPhone on the USB port. It happens with all the USB ports on the machine and rebooting the computer will fix the problem.

Does anyone has a suggestion as to what may cause the problem and how to fix it?
It there a service that I could try to restart instead of restarting the whole computer?

I am running Vista Business SP1 x64.

Thanks for your help.
 

My Computer

System One

Open up device manager, search for dev in the start menu, and see if any exclamation marks are listed. Also, run sfc /scannow at an elevated command prompt.

Is this a laptop?
 

My Computer

System One

  • Manufacturer/Model
    Sony Vaio Z46GDU
    CPU
    [email protected] w/6MB L2 cache 1066MHz FSB
    Memory
    6GB DDR3 1066MHz SDRAM
    Graphics card(s)
    9300M GS 256MB + Intel Integrated 4500MHD
    Monitor(s) Displays
    13.1" WXGA True Colour Tough
    Screen Resolution
    1600x900
    Hard Drives
    320GB SATA 7200RPM
    Internet Speed
    1MB/s

My Computer

System One

  • Manufacturer/Model
    HP
    CPU
    Intel Neo
    Memory
    2GB
    Graphics card(s)
    Intergrated Intel Graphics
    Sound Card
    Integrated
    Monitor(s) Displays
    10.1
    Screen Resolution
    1280 x 800
    Hard Drives
    160GB
    PSU
    Power Adapter
    Case
    It's special, it flips open :)
    Mouse
    Touchpad
    Keyboard
    Acer
    Internet Speed
    Down: 16mb/s Up: 1.6mb/s
    Other Info
    I killed my HP Laptop :'(
Hi Guys,

Sorry for the slow response but the problem did not occur until today.
Checked the device manager: for a short moment there was an "Apple USB Device Driver" item with an exclamation mark, and then it disappeared.

I ran the sfc command, then tried to plugin the USB device without luck.

I have just removed the INFCACHE.1 file as suggested in the other thread, and then rebooted the computer. This solved the problem but I know that only rebooting would previously fix the problem previously so I am not sure if it is permanently fixed now.

Oh, and this is a desktop PC.

Thanks.
 

My Computer

System One

Can you try a USB hub into one of the ports and see if it can power itself?
 

My Computer

System One

  • Manufacturer/Model
    Sony Vaio Z46GDU
    CPU
    [email protected] w/6MB L2 cache 1066MHz FSB
    Memory
    6GB DDR3 1066MHz SDRAM
    Graphics card(s)
    9300M GS 256MB + Intel Integrated 4500MHD
    Monitor(s) Displays
    13.1" WXGA True Colour Tough
    Screen Resolution
    1600x900
    Hard Drives
    320GB SATA 7200RPM
    Internet Speed
    1MB/s
Hi and thanks for your input. I do not have a usb hub at hand but I can tell you that when the problem occurs, the iPhone is not even charging. So there is probably not even a power output.
 

My Computer

System One

The port may be dead which may be a mobo problem. Can you flash your motherboard and are USB settings enabled in the BIOS?
 

My Computer

System One

  • Manufacturer/Model
    Sony Vaio Z46GDU
    CPU
    [email protected] w/6MB L2 cache 1066MHz FSB
    Memory
    6GB DDR3 1066MHz SDRAM
    Graphics card(s)
    9300M GS 256MB + Intel Integrated 4500MHD
    Monitor(s) Displays
    13.1" WXGA True Colour Tough
    Screen Resolution
    1600x900
    Hard Drives
    320GB SATA 7200RPM
    Internet Speed
    1MB/s
When I reboot, everything goes back to normal until a few days later when the problem occurs again. Plus it happens on all the ports (back and front of the case). It doesn't seem likely to me that it is a hardware issue?

What's the Windows service responsible for USB detection?
I'd like to try to restart that service next time it happens.
 

My Computer

System One

That would be plug and play. Try flashing the BIOS.
 

My Computer

System One

  • Manufacturer/Model
    Sony Vaio Z46GDU
    CPU
    [email protected] w/6MB L2 cache 1066MHz FSB
    Memory
    6GB DDR3 1066MHz SDRAM
    Graphics card(s)
    9300M GS 256MB + Intel Integrated 4500MHD
    Monitor(s) Displays
    13.1" WXGA True Colour Tough
    Screen Resolution
    1600x900
    Hard Drives
    320GB SATA 7200RPM
    Internet Speed
    1MB/s
Shell Hardware Detection is also service that detects USB devices.
 

My Computer

System One

  • Manufacturer/Model
    HP
    CPU
    Intel Neo
    Memory
    2GB
    Graphics card(s)
    Intergrated Intel Graphics
    Sound Card
    Integrated
    Monitor(s) Displays
    10.1
    Screen Resolution
    1280 x 800
    Hard Drives
    160GB
    PSU
    Power Adapter
    Case
    It's special, it flips open :)
    Mouse
    Touchpad
    Keyboard
    Acer
    Internet Speed
    Down: 16mb/s Up: 1.6mb/s
    Other Info
    I killed my HP Laptop :'(
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