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USB Not recognized (plug and play)

by gegroff / April 21, 2004 2:55 AM PDT

I recently purchased an External DVD R/RW (actually an NEC burner in an external enclosure) that was supposedly Plug and Play. When I plug it into my Notebook (HP ze4400 series) with Windows XP, it comes up with an error recognizing the drive. It tells me to connect the drive again and if it still has an error remove it. What should I do!?

Thanks for any help,

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Re:USB Not recognized (plug and play) (on USB 1.1)
by R. Proffitt Forum moderator / April 24, 2004 3:26 AM PDT
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Re:Re:USB Not recognized (plug and play) (on USB 1.1)
by Matt / May 17, 2004 1:18 PM PDT

Ok, I installed a new USB2.0 Card (I/O Flex 5-port PCI USB 2.0 Host Controller) in an available PCI Slot in my Dell Dimension 4100 (w/Windows XP). Plug n Play recognized it right away (I didn't even have to manually install the drivers, altough I could figure out how to on their CD because the path they had in their manual didn't exist). So all my devices, mouse, modem, printer and Smart Card reader work, but of course my new USB hard drive still didn't.

After turning / unplugging everything and installing from scratch, Plug n Play did recognize the device and installed it without error, BUT again Windows Explorer did not recognize it but it was listed in DEVICE MANAGER without errors, but when I tryed to open DISK MANAGEMENT it bombed out, when I rebooted, I got the error message and with Device Manager not reconizing the drive and a yellow exclamation point on driver.

Any suggestions! Thanks !

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Re:Re:Re:USB Not recognized (plug and play) (on USB 1.1)
by R. Proffitt Forum moderator / May 17, 2004 9:15 PM PDT

You need to use the clues at is a nice treatise about how little is supplied with such errors and in your case, there is no chipset, make/model for me to give you a direct link to USBMAN's tricks and traps page for your boards.

It is also possible you installed a driver where none was required. I have installed a few (too many) of these and a common trap for some is that they think because a driver is supplied, they should use it.

In closing, consider the card/device is new. It doesn't work and you have a warranty issue. Maybe it should go back?


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Re:Re:Re:Re:USB Not recognized (plug and play) (on USB 1.1)
by Matt / May 23, 2004 12:08 PM PDT

When I installed my new USB2.0 card, would it have changed my existing USB1.1 card? I assume it would not, so I have 2 USB1.1 slots and now 4 USB2.0 slots.


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Re:Re:Re:Re:Re:USB Not recognized (plug and play) (on USB 1.1)
by R. Proffitt Forum moderator / May 23, 2004 9:39 PM PDT

"When I installed my new USB2.0 card, would it have changed my existing USB1.1 card?"


"I assume it would not, so I have 2 USB1.1 slots and now 4 USB2.0 slots."

Beyond that, the OS and drivers have to be proper. has quite a reading on this issue.


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Re:Re:Re:Re:Re:Re:USB Not recognized (plug and play) (on USB 1.1)
by Matt / May 26, 2004 1:20 PM PDT

Western Digital has a diagnostic sortware, Data Lifeguard which I downloaded. After a while of just sitting there it recognized the drive and went through a routine to partition and configure the drive. It said it was all set up but still Disk Managment/My computer/Explorer don't recognize the drive.

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The usual.
by R. Proffitt Forum moderator / May 26, 2004 11:08 PM PDT

Sorry if I repeat this, but USB 1.1 doesn't work around here on such drives. Other checklist items.

1. Review about drivers and USB chipset issues.
2. Try the drive on another machine. The drive could be defective. The WD utility means little if it doesn't perform for you.

I'd note the hide drive letters is possible in Explorer, so I rarely use that since Explorer hides and mangles files so it's "unreliable." Why I don't think this is the issue here is that the Disk Management doesn't show the drive.


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Re:USB Not recognized (plug and play)
by Confed / April 27, 2004 12:32 PM PDT

I assume this was all USB 2.0 equipment. If your HP is an older series, it may be only USB 1.0 compatible. I did a brief check on Google and found some indications this may be the case. Even if the hard drive were backward compatible, it would be very slow.

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Fixinf WD USB not recognized Issue
by NTNYLION / March 15, 2009 5:45 AM PDT

There are many threads detailing this issue, and here is the order that worked for me. First, I updated to Windows XP SP3, just to ensure the latest driver was on my PC. I then disabled, re-started, and then enabled my 1394/FireWire to make sure there was no issue there. Finally, I plugged the drive in again where I received the "USB not recognized error" again, I left the USB plugged in and pulled the power cable from the back of the MyBook. I then plugged the power back in to the MyBook and listened for any noise. The hard drive started spinning and I saw my PC go through the typical AutoPlay routine. I was then able to see the data on my MyBook drive. As an EE, I can make two predictions since I do not have enough data to have a definitive answer. The first would be the drivers did not re-initialize with the MyBook plugged in and once it was unplugged it "reset" the transfer protocol and made the PC and MyBook correspond appropriately. Second, the disc control circuitry (since it is a mechanical spinning of the device) had gotten lost and needed a hard reset (i.e. an unplug) to get oriented correctly under USB control to determine how and where to begin spinning the drive. I hope this helps anyone with this issue! I tackled it for 3 hours!

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usb not reconised
by mahendra90 / September 19, 2009 4:05 PM PDT

hcl laptop window xp pro

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(NT) This post from 2004 is now closed.
by R. Proffitt Forum moderator / September 20, 2009 12:59 AM PDT
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