I'm having a strange problem with a computer and it's USB ports. Basically when I plug in a device, either my Ipod or Zen thing they don't appear anywhere in my computer but when connected the Ipod will charge and connecting the Zen will turn it on. Any ideas?
USB problems
- Thread starter Broon
- Start date
Associate
Look at the Device Manager, under USB Devices.
Does it list anything for those MP3 players (including "Unknown Device"), or does it say nothing at all?
If it's the former, you should try making the computer re-recognize the USB devices. This can be done under Registry Editor (I'll post the location if this is the case)
Does it list anything for those MP3 players (including "Unknown Device"), or does it say nothing at all?
If it's the former, you should try making the computer re-recognize the USB devices. This can be done under Registry Editor (I'll post the location if this is the case)
Soldato
I had this annoying problem with my digital camera once, I think I moved some USB cables around in different connections at the back of the computer to get it to work.
Ye the Zen and Ipod use different cables and the Ipod works on my computer. They were both tried in 4 different USB ports always with the same resault. I used device manager to uninstall the USB root hubs and then when I restarted windows detected new hardware and reinstalled them. Still nothing when they are connected. I have my Ipod set to be used as a storage device and it dosn't appear in my computer when connected, just sits there charging.
Soldato
Have you disabled any windows services?
Associate
Source: Microsoft Tech Support, posted on Experts Exchange (originally for a camera, but applies to other USB devices as well- substitute Digital Camera for MP3 or Storage devices as necessary)
==>According to the information, I recommend you follow these steps to resolve this issue:
Step 1: 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 digital camera devices and unknown devices (including grayed out devices)? If so, please right click it and click Uninstall.
Step 2: 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"
"exit"
Step 3: 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.
Step 4: Reconnect the digital camera to the computer system:
=============================
1. With the computer system turned off, reconnect the Sony DSC-P50
camera to the USB port.
2. Restart the computer.
3. After the Windows operating system has finished restarting, plug the
digital camera into the electrical outlet.
4. A New Hardware Detected window should open and reload the
drivers.
If the camera still cannot work, I recommend you plug the camera to
another Windows XP computer (Desktop) to test whether this camera
works. I suspect it is an incompatibility issue.
==>According to the information, I recommend you follow these steps to resolve this issue:
Step 1: 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 digital camera devices and unknown devices (including grayed out devices)? If so, please right click it and click Uninstall.
Step 2: 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"
"exit"
Step 3: 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.
Step 4: Reconnect the digital camera to the computer system:
=============================
1. With the computer system turned off, reconnect the Sony DSC-P50
camera to the USB port.
2. Restart the computer.
3. After the Windows operating system has finished restarting, plug the
digital camera into the electrical outlet.
4. A New Hardware Detected window should open and reload the
drivers.
If the camera still cannot work, I recommend you plug the camera to
another Windows XP computer (Desktop) to test whether this camera
works. I suspect it is an incompatibility issue.
