Transcend USB Drive NOT Detecting???

By ravi_chhabria21 ·
I have a 2Gb Transcend USB Pen Drive, which is not detecting on Windows XP laptop. Any driver available for XP to download...I'm facing the similar problem with my External HDD of Western Digital passport of 320 GB?
Pls Help

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You may need a Powerd USB Hub

by Jacky Howe In reply to Transcend USB Drive NOT D ...


Try rebooting the computer without any USB devices attached. Then plug in the USB drive, right click on My Computer, select manage, and then click ?Disk Management.? If the drive is not present in the Disk Management window or if you are not able to access it, then the drive may have failed. In this window you should see all of your connected physical drives, their format, if they are healthy, and the drive letter.

Change the drive letter of the drive. Right-click on the drive in the list, and from the resulting menu select "Change Drive Letters and Paths"

Click on Change so you can change the drive letter. Click Change. Select a new drive letter from the drop down list, preferably the one that is not normally used for this drive.

Click Yes on the confirmation screen and you are done.


Write down all fixed Disk and CD/DVD drive letters so as not to delete them. DO NOT delete any of the fixed hard disk drives or CD/DVD optical drives registry values.

1. Login with Administrative privileges.

2. Disconnect all USB or FireWire storage devices.

3. Open Registry Editor by typing regedt32 in the Run box and navigate to the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices

4. Under HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices there will be registry keys with the name that resembles the format of \DosDevice\X: where X can be any alphabet letter which corresponding to your physical system drive letter.

5. Delete all possible USB drives, FireWire drives and external drives which have a drive letter.

<b>DO NOT delete any of the fixed Hard Disk Drives or CD/DVD optical drives registry values.</b>

Exclude \DosDevice\A: which normally reserved for floppy disk drives.


Click Start and in the Run box type in cmd and press Enter.

At the command prompt type in chkdsk U:/r 'the drive letter that you just added:' EG: U: and press enter.

If it finds any discrepancies it should fix them.

Tip: The cause of unpredictable behavior in a USB drive is often found to be the incorrect removal of a previously connected USB device. When removing USB devices right click on the ?Safely Remove Hardware? icon in the menu bar tray. This is usually found in the bottom right hand corner of the monitor. Once you have clicked on the icon, a menu with a single selection should appear. Click again on that selection to see the ?Safely Remove Hardware? window. Select the correct USB device and click the ?Stop.? When you receive the message that it is safe to remove the device, unplug the USB device from the computer.

Most External USB HDD devices are delivered with two cables (a Data cable and an addtitional USB Power cable). If you encounter problems, use both the Data and Power cable.
If the External USB HDD devices still fails connect it to a self-powered USB Hub.
Most problems on an External USB HDD devices are caused by a too high power consumption during initalisation or data transfer. The USB specification for a USB port is 500mA per port. If a device needs more then 500mA, the USB port may be switched off by the over current circuit.

To avoid too high a power consumption on the used USB port, connect the External USB HDD device to a second USB port with the additional Power cable . This provides up to 1000mA to the USB device. If the device still fails, try a self-powered USB Hub, as they are, in most cases, able to provide more than 500mA per USB port.

If all this fails, you may have to check if the USB ports are Ok (i.e. possible Hardware failure). To check the USB port, connect a generic USB device like a USB mouse. If the USB port is Ok, there may be an incompatiblity between the system and the used External USB HDD Device. If so, try a different device or one from another vendor.

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Another thought

by Jacky Howe In reply to You may need a Powerd USB ...

you could always go to the manufacturers site and download and install the latest Device Drivers for your Notebook.

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RE: Any driver available for XP to download...

by OH Smeg Moderator In reply to Transcend USB Drive NOT D ...

Easy and extremely simple answer is No there is nothing required on a correctly functioning XP computer.

But you can open the Drive Management Console and see what it is showing for these drives. Most times with external HDD the user doesn't use the Safely Remove Option in XP and caused the Partitions tables to be corrupted which effectively means that the drive need to be reformatted to work again destroying any data stored on it in the process.

Thumb Drives are a different kettle of Fish though as they have o moving parts so they are not as easily corrupted but it is still possible so you should open the Drive Management in XP and look at what it is telling you about these Dries before proceeding any further. You should also download the WD Testing Utility to check the correct Function of the WD Drive as these do not take kindly to constant use. You should only use them when needed to backup r restore Data and turn them off an leave then alone till they are required again.



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