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XA HD500 not recognized

I pluggin my JVC XA-HD500 into a USB 2.0 hub that’s connected to my PC and my PC doesn’t recognize the device.

What would be the problem.

Please help..

2toy

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Hi 2toy, your computer might not recognize the XA-HD500 if you connect it to your PC through a USB 2.0 hub if the hub also has slower USB 1.1 devices connected to it. This is a problem with the XA-HD500’s firmware, and downloading a firmware upgrade from JVC’s Web site should fix the problem.
To do this, open a Web browser with an active Internet connection and go to the following URL: www.jvc.com/custrel/index.jsp. Click the XA-HD500 Firmware Upgrade link to download the firmware upgrade and the XA-HD500 Firmware Upgrade Instructions link to view the instructions for properly installing the firmware upgrade.
As a general word of caution, upgrading a device’s firmware is similar to editing your PC’s registry. Be absolutely certain you know how to perform the necessary steps before actually carrying them out. A botched firmware upgrade can irrevocably damage your hardware.

Hope it helps you.

Enjoy

Pls. rate & hope to hear more from you..

tnx
-micro

Posted on Feb 11, 2008

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Posted on Feb 11, 2008

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The computer can not recognize drive (unknown USB device).


Method 1 - Unplug Computer So how did I finally fix the problem? Well, if you are lucky, it's a super simple solution! Try this method first and if it works, you'll have saved a lot of time.
Simply unplug your computer from the power supply. Yes that is it! Note that this does not mean just turning off your computer using the power button because most modern computers don't actually turn off completely and the motherboard will still get power. This is useful sometimes if you want to remotely wake up a computer, etc.
The motherboard is where all of hardware of the computer connects to, including the USB ports. Sometimes the motherboard needs to be "rebooted" because things can go wrong, i.e. all or some USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should hopefully be recognizing devices again.
So first turn off your computer using the Shut Down option in Windows or pressing the power button and then UNPLUG the PC from the wall outlet. Let it sit for several minutes and then plug it back in.
Method 2 - Update Device Driver If Windows is not able to recognize the device, you may also see in Device Manager that the device shows up as an "Unknown Device". You can get to Device Manager by clicking on Start and typing in devmgmt.msc or by going to Control Panel and clicking on Device Manager.
In that case, you should right-click on Unknown Device, click on Properties, then the Driver tab and then click Update Driver.

If this doesn't work, you can also try to download the driver for your device from the manufacturer's website. If the USB device is just a flash drive, then it's probably not a driver issue. However, if you are installing a USB printer, drawing pad, etc, then it might be worth downloading the driver for that specific device.

Method 3 - Restart & Disconnect USB Devices The next thing you can try is to disconnect all USB devices and then restart the machine. once you have restarted, try to connect the USB device that was causing the problem.
If that particular USB port doesn't recognize it, try another one. If the device is recognized by a different USB port, there could be a hardware problem with one of the USB ports. If no USB port recognizes the device, then keep reading because it's probably something else.

Method 4 - USB Root Hub Another thing you can try is to open Device Manager, expand USB Serial Bus Controllers, right-click on USB Root Hub and then click on Properties.
Click on the Power Management tab and uncheck the Allow the computer to turn off this device to save power box. If you have more than one USB Root Hub listed, you need to repeat these steps for each one.
Click OK and then restart your computer. Try to reconnect the USB device and see if it is recognized. If not, go back to the power management tab for each one and check the box again. If it does recognize the device, then leave them unchecked.

Method 5 - Connect Directly to PC A friend of mine ran into this issue and the cause ended up being his USB hub. He only had three USB ports on his computer, so he bought a hub where he could connect an additional 8 USB devices.
I guess this proved too much for his computer and it just started sporadically not recognizing various devices. After removing the hub and connecting the device directly to the computer, it worked just fine.
We haven't really been able to find any other solution to this problem other than reducing the number of items connected to the hub. Actually, one other solution worked, but it meant having to buy a new USB hub with more power.
If you are having this problem with Windows 8 or Windows 8.1, then you might be in luck. Microsoft has released a fix for Windows 8 not detecting USB devices properly. Make sure to install this hotfix if running Windows 8.
Method 6 - USB Troubleshooter If nothing has worked so far, you can download the Windows USB Troubleshooter Fixit tool. It's a free tool that works with Windows XP, Vista and 7.
You can either have the troubleshooter fix the problems for you or select the fixes yourself. I would just let it fix them for you since the choices can sometimes be confusing and technical for the novice user.
Method 7 - Update Generic USB Hub If you are getting the Unknown Device error in Device Manager, you can also try one other thing. Open Device Manager and then expand Universal Serial Bus Controllers.
You should see at least one item called Generic USB Hub. On some computers, you might see two, three or more of these. Right-click on the first one and choose Update Driver Software.
When the update dialog pops up, choose Browse my computer for driver software.
When the update dialog pops up, choose Browse my computer for driver software.

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Tip

USB DEVICE DOES NOT recognize


Issue:: USB DEVICE DOES NOT recognize

___________________________________


Manual Troubleshooting for this issue::

___________________________________



-Open device manager

-Right Click on USB Root Hub

-Choose Properties >>Selet Power Management

-Remove the Tick Mark Before "Allow the computer to turn off the power if device is not in use..."

-Do the same for all USB ROOT HUB


-Then Uninstall all USB ROOT HUB

-Restart your computer , USB device will be working.

on Jun 21, 2010 | Computers & Internet

1 Answer

Printer not being recognized by computer


Sir/Madam

1. Is the printer turned on?
Make sure the printer is turned on.
Make sure the power cord is securely plugged into the electrical outlet.
Test the power by plugging in the power cord of another electrical appliance to an electrical outlet and turn it on. If the power to the other electrical appliance comes on, the printer may be considered to be faulty.
If this product is recognized:
Close this page to return to the installation window.
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2. Are your computer and the printer correctly connected?
Make sure the USB cable is securely connected to the printer and to your computer and check that the USB cable is not damaged nor badly crimped.
The printer will not be recognized during the driver installation if connected to a printer switch or the printer buffer. If this is the case, try to directly connect the printer to your computer using the USB cable.
If you are connecting the printer to your computer via a USB hub, connect the printer to the first-tier hub from your computer. If the printer driver is still not recognized on your computer, try to directly connect the printer to your computer without the USB hub.
If you are connecting the printer to your computer via a USB hub, make sure the USB hub device is recognized by your computer.
If this product is recognized:
Close this page to return to the installation window.
If this product is not recognized:
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3. Does your computer provide USB or IEEE 1394 support?

If Still Your Problem Is not solved Then Click On Below URL
http://files.support.epson.com/htmldocs/r1800_/r1800_rf/dset_1.htm

Or

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If your MP3 Player is under warranty period then you can look for its repair (can be done if its out of warranty too, but it will charge you extra)
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When my computer searches for new hardware, it recognizes it and then installs it as "Unknown Device" The device still will not work, however, because when I check it in the device manager it...


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Hello,
Method 1: Initiate recognition of the USB device by using Device Manager loadTOCNode(2, 'workaround'); To initiate recognition of the USB device by using Device Manager, follow these steps:

1. Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
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Windows XP recognizes the new device.
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If this method resolves the issue, you are finished.

If this method does not resolve the issue, go to method 2.
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Use this method if method 1 does not work. To disable power management of the USB hub, follow these steps:

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If this method does not resolve the issue, go to method 3.

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If this method does not resolve the issue, go to method 4 .
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I think that it doesn't like going via a USB hub, but wants a direct connection. All of the USB ports on my computer are connected direct to the motherboard (i.e. none are on PCI cards or anything), but looking at the hardware info for the computer, it looks like the motherboard has a few "direct" USB connections, and then an on-board hub which the front ports connect to. If your computers are the same, that would explain things. I'd suggest trying each USB port one at a time (turn the camera off before plugging in, and back on when in) and see if one of them works. Wouldn't hurt to power the camera from the mains at the time too.

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