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Author Topic: XP not detecting flash drive  (Read 4706 times)

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JL2008

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    XP not detecting flash drive
    « on: November 19, 2012, 04:46:01 PM »
    Hi,

    I have a PC with XP. When I connect my flash drive to it, nothing happens. I went to the registry and the value is set to 3. I went to computer management and all I see is the hard drives. There is nothing under removeable storage. I have another PC with 2000. This PC detects my flash drive. Any ideas?

    jason2074



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    Re: XP not detecting flash drive
    « Reply #1 on: November 19, 2012, 07:05:46 PM »
    Does it mean, all flash drives attached to XP not being detect?

    nisharhmd7



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      Re: XP not detecting flash drive
      « Reply #2 on: November 20, 2012, 07:07:53 AM »
      Can u tell us u r systems configuration ?

      This will help us solve u r problum my frnd

      JL2008

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        Re: XP not detecting flash drive
        « Reply #3 on: November 20, 2012, 04:48:19 PM »
        All drives attached to XP arent detected.

        What you mean by my system configuration? CPU, Memory etc?

        evilfantasy

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        Re: XP not detecting flash drive
        « Reply #4 on: November 20, 2012, 05:53:49 PM »
        Try running USBDeview. It lists all USB devices that are currently connected to your computer, as well as all USB devices that have previously been connected.

        The output you want to look at will look something like this (only with more information in each string):

        Port_#0005.Hub_#0005 Generic USB Device (or the name of the flash drive)

        If you see it named then right-click it and choose Uninstall Selected Devices. Then plug the USB back in and see if it starts the install process.
        - I'm not sure but you may want to restart the computer after Uninstalling Selected Devices.

        JL2008

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          Re: XP not detecting flash drive
          « Reply #5 on: November 21, 2012, 06:26:28 PM »
          I hooked up my flash drive to the port behind the PC and Windows detected it. But if I hook it up to the ports in the front, Windows wont detect the flash drive. Any fix for this?

          evilfantasy

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          Re: XP not detecting flash drive
          « Reply #6 on: November 21, 2012, 06:31:08 PM »
          Did you follow my instructions?

          JL2008

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            Re: XP not detecting flash drive
            « Reply #7 on: November 22, 2012, 06:21:06 PM »
            Yes I followed your directions.

            DaveLembke



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            Re: XP not detecting flash drive
            « Reply #8 on: November 22, 2012, 08:47:27 PM »
            Just curious as to if other devices work on this front USB port? Such as do you have 2 ports in the front and both dont work or just 1 port doesnt work to where it could be an issue with the port itself. Have you tried other USB thumb drive(s) on this same front panel jack that is having troubles.

            I have seen issues before with front USB ports unable to handle larger draws from external 2.5" drives which are both powered and communicating though them and the wiring that is from the motherboard and the front panel jack is insufficient for the load. Thumb/Pen drives draw very little power that this shouldnt be the case here, but could be verified if you had a powered USB hub ( powered off its own power supply vs off of the computers PSU ) to plug in between the front panel and the USB Thumb/Pen drive which then isolates the need for the PC to power the device and then you are only dealing with USB communications vs Communications plus power off the PC's internal PSU.

            JL2008

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              Re: XP not detecting flash drive
              « Reply #9 on: November 22, 2012, 09:13:26 PM »
              Thanks to everyone for replying.

              I connected a printer to both front ports and I was able to print. I have tried about 5 flash drives to the fron USB ports and Windows didn't detect any of them.

              DaveLembke



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              Re: XP not detecting flash drive
              « Reply #10 on: November 23, 2012, 09:26:01 PM »
              Quote
              I connected a printer to both front ports and I was able to print. I have tried about 5 flash drives to the fron USB ports and Windows didn't detect any of them.
              Sounds like USB power issue to the front ports. Printer does not require a +5VDC Tap to function, just the USB communication.

              Quote
              The USB Pinout:
              Pin Name Cable color Description
              1 VCC Red +5 VDC
              2 D- White Data -
              3 D+ Green Data +
              4 GND Black Ground
               

              Pin 1 ( 5VDC ) isn't strong enough at the front ports or open. Pins 2,3 and 4 ( D-, D+, and Ground ) allow for communication with printer successfully since printer doesnt need to be powered off USB Bus power.

              I have seen issues with lower end computer cases and front usb port power due to too lite of gauge wiring used between the front ports and the connection with the motherboard. But still, thumb drives draw so little power to function that I'd suspect that pin 1 on your front ports must be missing the +5VDC to cause this. A powered USB hub would be a solution in which the thumb drives would be powered off of an external power source and not rely on the 5 volts from the front USB ports. Or ohm out pin 1 at the front panel to the connector that goes to your motherboard with digital multimeter with computer off and power cord removed from power supply to avoid smoking anything.

              All pins should ohm out to less than 3 ohms each. If you find anything greater than 3 ohms, I'd inspect the wires for damage or corrosion. If no reading at all, then you have an open connection or your trying a continuity measurement against the wrong usb port pin and pin at the connector side. ( you might need a small/thin metal paperclip to stuff into the USB plug after removing it from the motherboards USB berg stick pins, otherwise sometimes the multimeter probe can make connection where the pin is locked into the connector and wire exits towards the front panel.

              Also some cases have front USB ports with cables soldered directly to the USB port connectors and others have small circuit boards with a few capacitors on them for signal filtering etc.  If you have a small circuit board you might find that the issue is a poor solder connection on it as for both ports would share the same +5VDC tap from the motherboard.

              JL2008

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                Re: XP not detecting flash drive
                « Reply #11 on: November 29, 2012, 08:12:58 PM »
                I installed USBDeview and followed your directions and it still does not work. Anymore ideas? The PC is an Acer Vertion M2610.

                JL2008

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                  Re: XP not detecting flash drive
                  « Reply #12 on: December 06, 2012, 08:17:54 PM »
                  Now the front ports does not work at. I connected a printer, mouse & keyboard to both ports and nothing happened.