USB not recognised

Solution:
I found the following solution workable for my case:
Remove Hidden Devices 1. Click Start. Click Run. Type cmd and press OK.
2. Type “set DEVMGR_SHOW_DETAILS=1′ (without quotation marks) and press Enter.
3. Type “set DEVMGR_SHOW_NONPRESENT_DEVICES=1′ (without quotation marks) and Press Enter.
4. Type “start devmgmt.msc” (without quotation marks) and click press Enter.
5. Click View. Click Show hidden devices.
6. Click “+” to expand Imaging devices, Unknown devices and USB devices.
7. Are there any USB devices and unknown devices (including grayed out devices)? If so, please right click it and click Uninstall.

(It's found on the hersam web site)
After doing this, my device works again with no problem.

Your Problem:
If you get "Usb device not recognized" in Windows and the above solution doesn't work for you, there might be other causes:
A) USB device worked before but suddenly stopped working:

The following solution might be applicable:

1) Remove all oem*.inf files =
1. Click start and click run then under the run line type in the command “cmd” (without the quotation marks)
2. In the command line, type in the following (without the quotes) and press enter after each command:
“cd \windows\inf”
“ren infcache.1 *.old”
“ren oem*.inf *.old”
“del C:\windows\setupapi.log”

2) Removing all entries under HKEY_LOCAL_MACHINE/Enum/USB that start with VID ==
Removing the VID entries from the registry will cause them to be redetected at restart.
CAUTION: If you have a USB keyboard or mouse, do not remove the VID entry for these devices, otherwise, Windows may not restart correctly.
1. Click Start and click Run. Type regedit and click OK. The Registry Editor window will open.
2. Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\USB.
3. Highlight and delete all the VID_…. entries.
Permissions may be set allowing the deletion of the VID_ entries by following the steps below:
a)Right-click the key to be deleted, and then click Permissions. The VID_… Permissions window will open.
b)With Everyone highlighted in the Group or User name section, select Full Control in the Permissions section.
c)Click Apply, and then click OK.
4. Turn off the computer.

Reconnect the USB device to the computer system: ==
1. With the computer system turned off, reconnect the USB hub to the the USB port.
2.Restart the computer.
3.A New Hardware Detected window should open and reload the drivers.

B) USB device never worked before / it works but die in midway when doing something or you may get "usb device has malfunctioned":
The following solution might be applicable:
1) Try using a shorter USB cable.
2) Try plug in the device to the back of your computer instead of the front USB port (this is because some computers don't have enough power in the front USB ports)

3) Some USB 2.0 device are not backward compatible with USB 1.1 ports. Try plugging in with USB 1.1 and 2.0 port to see that's the cause of the problem.

4) Try downgrade all your USB port from 2.0 down to 1.1, you can do that in your BIOS.

5) if all failed, try the USB device on a different computer. Then you can determine if the USB device or the USB port is the culprit of the problem
also, if you can't find your solution here, you might be able to find it on the link below...

http://dan.hersam.com/archives/2005/07/1...
let me know if it works ,if not i will try my level best to resolve the issue .
--------------------------------------------------------------------------------------------
dilipbagdi
Technical Associate Solution:
I found the following solution workable for my case:
Remove Hidden Devices 1. Click Start. Click Run. Type cmd and press OK.
2. Type “set DEVMGR_SHOW_DETAILS=1′ (without quotation marks) and press Enter.
3. Type “set DEVMGR_SHOW_NONPRESENT_DEVICES=1′ (without quotation marks) and Press Enter.
4. Type “start devmgmt.msc” (without quotation marks) and click press Enter.
5. Click View. Click Show hidden devices.
6. Click “+” to expand Imaging devices, Unknown devices and USB devices.
7. Are there any USB devices and unknown devices (including grayed out devices)? If so, please right click it and click Uninstall.
(It's found on the hersam web site)
After doing this, my device works again with no problem.
Your Problem:
If you get "Usb device not recognized" in Windows and the above solution doesn't work for you, there might be other causes:
A) USB device worked before but suddenly stopped working:
The following solution might be applicable:

1) Remove all oem*.inf files =
1. Click start and click run then under the run line type in the command “cmd” (without the quotation marks)
2. In the command line, type in the following (without the quotes) and press enter after each command:
“cd \windows\inf”
“ren infcache.1 *.old”
“ren oem*.inf *.old”
“del C:\windows\setupapi.log”
2) Removing all entries under HKEY_LOCAL_MACHINE/Enum/USB that start with VID ==
Removing the VID entries from the registry will cause them to be redetected at restart.
CAUTION: If you have a USB keyboard or mouse, do not remove the VID entry for these devices, otherwise, Windows may not restart correctly.
1. Click Start and click Run. Type regedit and click OK. The Registry Editor window will open.
2. Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\USB.
3. Highlight and delete all the VID_…. entries.
Permissions may be set allowing the deletion of the VID_ entries by following the steps below:
a)Right-click the key to be deleted, and then click Permissions. The VID_… Permissions window will open.
b)With Everyone highlighted in the Group or User name section, select Full Control in the Permissions section.
c)Click Apply, and then click OK.
4. Turn off the computer.
Reconnect the USB device to the computer system: ==
1. With the computer system turned off, reconnect the USB hub to the the USB port.
2.Restart the computer.
3.A New Hardware Detected window should open and reload the drivers.
B) USB device never worked before / it works but die in midway when doing something or you may get "usb device has malfunctioned":
The following solution might be applicable:
1) Try using a shorter USB cable.
2) Try plug in the device to the back of your computer instead of the front USB port (this is because some computers don't have enough power in the front USB ports)
3) Some USB 2.0 device are not backward compatible with USB 1.1 ports. Try plugging in with USB 1.1 and 2.0 port to see that's the cause of the problem.
4) Try downgrade all your USB port from 2.0 down to 1.1, you can do that in your BIOS.
5) if all failed, try the USB device on a different computer. Then you can determine if the USB device or the USB port is the culprit of the problem
also, if you can't find your solution here, you might be able to find it on the link below...
http://dan.hersam.com/archives/2005/07/18/usb-device-not-recognized let me know if it works ,if not i will try my level best to resolve the issue . -------------------------------------------------------------------------------------------- dilipbagdi Technical Associate

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Try another USB device to connect to the computer and if that too doesnt work than has to be the USB emulation in the BIOS which is not turned on you have to make sure you get into the bios of you system and turn the Emulation on.

Try another USB device to connect to the computer and if that too doesnt work than has to be the USB emulation in the BIOS which is not turned on you have to make sure you get into the bios of you system and turn the Emulation on.

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Device will start recognizing the drive

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