Compaq Presario V5201US

Posted on 2009-02-18
Last Modified: 2012-05-06
We have a Compaq Presario V5201us notebook computer whose USB ports seem to be failing at a windows level.  What is a good solution?

Can this computer boot from USB?
Question by:RCC_Tech
    LVL 39

    Expert Comment

    Are those usb ports all failed? or are you trying to boot from USB drive or media and it fails?

    Author Comment

    All the USB ports are not functioning
    USB devices are detected as unknown in Windows, even with a fresh install.  USB is not detected via bootable CDs & computer does not boot off of boot USB Flash media.
    Also, ExpressCard to USB 2.0 Controller gives the same result.  At least two of these cards rely on the on-board USB 2.0 Controller to function
    LVL 32

    Expert Comment

    Which windows OS are you running?
    You can test the USB outside of windows by running a bootable live cd like knoppix.
    If the USB ports work in knoppix then you may need to reinstall windows.
    If the USB ports do not work in knoppix, then the motherboard will need to be replaced.

    Author Comment

    USB does not work off of knoppix, even with ExpressCard to USB 2.0 Adapter.  Is there an ExpressCard USB 2.0 Adapter that does not utilize the on-board USB controller?
    LVL 32

    Accepted Solution

    No, the 2 flavors of express card slot in laptops are either run from the PCI express bus, or the USB 2.0 controller. Yours seem to be USB controlled.
    Do any express cards other than the usb adapter type work?

    Author Comment

    Yes, an ExpressCard to Cardbus Adapter with a Cardbus to USB 2.0 Adapter worked normally

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