Question about PC Desktops

1 Answer

USB devices not seen

Thanks for the very fast response. The usb controller list reads as follows. I am reluctant to delete all of these without making sure first. None of them are in bold.
USB Controllers
Standard enhanced PCI to USB controller
Standard openHCD USB Host controller
Standard openHCD USB Host controller
Unknown Device (6 of these)
USB Root Hub (3 of these)

Thanks

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 3,587 Answers

I'm looking for those with question marks or exclamation points...

Posted on Mar 28, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

USB CD/DVD does not read


if you are referring to a usb drive


click start control panel administrative tools computer management device manager scroll down universal serial bus controllers you could see a yellow question / exclamation mark? ! or a red X

you will need to update/reinstall drivers

right click to reinstall drivers


if you can see your usb drive but its not working

ports (com&lpt) right click update driver if this fails to fix the problem


check the USB leads that attach to the motherboard usually red white green black make sure they are securely seated and have no dust build up on them dust will cause static and a lot of unforeseen problems to a computer and its parts

Click start control panel administration tools computer management device manager scroll down cd-dvd rom drives you might see a yellow question /exclamation mark ? ! or a red X right click to update driver

you might have to physically unplug the leads for this cd/dvd restart your computer then plug them back this should activate the found new hardware wizard

if this does not fix the problem it might be a registry problem if you cant see your disk drive in windows explorer


Close all open programs

Click on Start, Run, and type regedit and press Enter
Click on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak

If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editor
Reboot your computer

Open My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.


hope it helps

Jun 16, 2012 | Dell Dimension 9150 (DIM915MIN) PC Desktop

1 Answer

My memerysticks stop working when i put in i cannot see my my home work on screen


Follow the steps given below to refresh USB ports.

1. Right-click My Computer icon on the desktop, and then select Properties.
2. Click the Hardware tab.
3. Click the Device Manager button.
4. Click the plus (+) sign to the left of Universal Serial Bus controllers.
5. Right-click the device listed under Universal Serial Bus controller and select Uninstall.
6. Click OK to confirm the removal of the device.

Please note, repeat Steps 5 and 6 until all the devices under Universal Serial Bus Controller are removed.

7. Shut down the computer.

CAUTION: Ensure that the Shut Down option is selected, instead of the Restart option.

8. Wait for 5 seconds and then restart the computer. When the computer restarts, a "Windows has detected new or added hardware" message window will open.

The above steps will refresh the USB ports.

Now connect the USB devices like mouse, video camera, your external usb hard disk...usb hubs...whatever you like and the drivers should install automatically.

Tip: It is always recommended to connect the main usb devices at the rear end usb port, as they require more power to initiate.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe


Mar 12, 2011 | PC Desktops

1 Answer

HP s7700n - all USB ports have stopped working. Device Manager shows drivers are okay. I'm thinking the bridge chip on the motherboard has failed. Any other ideas?


Try to to refresh USB ports.

1. Right-click My Computer icon on the desktop, and then select Properties.
2. Click the Hardware tab.
3. Click the Device Manager button.
4. Click the plus (+) sign to the left of Universal Serial Bus controllers.
5. Right-click the device listed under Universal Serial Bus controller and select Uninstall.
6. Click OK to confirm the removal of the device.

Please note, repeat Steps 5 and 6 until all the devices under Universal Serial Bus Controller are removed.

7. Shut down the computer.

CAUTION: Ensure that the Shut Down option is selected, instead of the Restart option.

8. Wait for 5 seconds and then restart the computer. When the computer restarts, a "Windows has detected new or added hardware" message window will open.

The above steps will refresh the USB ports.

Now connect the USB devices like mouse, video camera, your external usb hard disk...usb hubs...whatever you like and the drivers should install automatically.

Tip: It is always recommended to connect the main usb devices at the rear end usb port, as they require more power to initiate.


If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe




Feb 19, 2011 | HP Pavilion s7700n (5584788) PC Desktop

1 Answer

The front 3 usb ports are not working along with all the card readers. In device manager they show to be working properly.


Follow the steps given below to refresh USB ports.

1. Right-click My Computer icon on the desktop, and then select Properties.
2. Click the Hardware tab.
3. Click the Device Manager button.
4. Click the plus (+) sign to the left of Universal Serial Bus controllers.
5. Right-click the device listed under Universal Serial Bus controller and select Uninstall.
6. Click OK to confirm the removal of the device.

Please note, repeat Steps 5 and 6 until all the devices under Universal Serial Bus Controller are removed.

7. Shut down the computer.

CAUTION: Ensure that the Shut Down option is selected, instead of the Restart option.

8. Wait for 5 seconds and then restart the computer. When the computer restarts, a "Windows has detected new or added hardware" message window will open.

The above steps will refresh the USB ports.

Now connect the USB devices like mouse, video camera, your external usb hard disk...usb hubs...whatever you like and the drivers should install automatically.

Tip: It is always recommended to connect the main usb devices at the rear end usb port, as they require more power to initiate.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe



Feb 08, 2011 | HP Pavilion a1130n (PX769AA) PC Desktop

1 Answer

Usb port not recognized any device


  • Don't worry just follow the simple steps and get rid out of that problem
    • Unsecure or Loose Connection
    Unplug the presently connected USB device (if any). It is quite possible that the connection is not secure and has become loose. Re-plug the USB device tightly and firmly into the USB port. This is one of the most common reasons for an error in detecting a USB device.
  • Scan for Hardware Changes in Device Manager
    Use the Device Manager to scan for new and recently installed hardware. From the Start menu, select the Run option. In the pop up box, type in Devmgmt.msc and then click Ok. From the Action menu, click Scan for hardware changes. This will make Windows scan & recognize any new devices that are installed. Now, close all opened device managers and control panels. Now, follow the above step and see if your computer detects the USB device.
  • USB Hub Power Management
    Disable power management of the USB hub. To disable the power management on the USB hub, follow these steps; Click Start, and then click Run. Type devmgmt.msc in the popup box, and then click Ok. Expand the Universal Serial Bus Controllers' node, and then follow these steps for each USB Root Hub that is listed.

    1. Right-click the USB Root Hub and then click Properties.
    2. Click the Power Management tab.
    3. Click to clear the Allow the computer to turn off this device to save power check box, and then click Ok.
    Note: If you perform the following procedure on a laptop computer, you may reduce the battery life.
  • Sometimes, simply unplugging the USB device and turning off the computer for twenty minutes and then restarting may solve the issue. If none of the above options have solved the problem, check the manufacturer's website for new driver information. It is possible that your drivers need to be updated. There could also be a possibility of hardware failure, which needs to be checked by a hardware expert.
Please rate me if this solution works for you

Thanks......Have a great time

Jun 29, 2010 | Acer Veriton 7600GT PC Desktop

1 Answer

'USB device not recognised


Hi Peter,

Try this solution. Just follow this step to uninstall and reinstall the USB drivers. I am assuming that you have a Windows OS.

1. click START
2. right click My Computer (an icon of this can also be seen on the desktop)
3. left click Manage
4. Computer Management will appear
5. look for Device Manager and click it
6. on the right panel, you will see Universal Serial Bus controllers
7. expand that by click the plus (+) sign next to that
8. delete everything under that by highlighting each one of it, then on the keyboard, just press delete
9. once finish with everything, just reboot the computer

Let me know if this works.

Jon

Oct 10, 2009 | Fujitsu Siemens PC Desktops

1 Answer

USB suddenly malfunctioning on Dell TOwer


It does sound like your ports on the front might be bad. They usually connect to a seperate port on the motherboard than the rear ones, and I have seen devices short out the front ports, such as a USB music player.

You can remove the ports on the device manager, and they should come back ok, without worry. However, I doubt that is going to help the front ones. I think you have a hardware problem.

If that is the case, the easiest solution is to get a USB hub, and run a USB cable from the rear, to the front of the computer.

Mar 28, 2009 | Dell OptiPlex GX260 PC Desktop

1 Answer

Compac n6000 usb port problem


The issue could be due to corrupt USB Driver. I will give you a few steps to re-install the Drivers.
Please perform the following steps to uninstall USB Port.
1. Right-click on My Computer icon and select Properties.
2. Click Hardware tab. Click the Device Manager button and double-click the Universal Serial Bus Controllers.
3. Select a device listed under Universal Serial Bus Controller, right-click and Uninstall.
4. Click Yes to confirm the uninstallation of the device.

NOTE: Repeat step 3 and 4 until all the devices under Universal Serial Bus Controller are removed.

The USB port is now uninstalled. Now, restart the system. The system automatically detects and reinstalls the USB port.

Step 2:-

Try the following update for the USB port.

http://support.microsoft.com/kb/822603
Thanks
Rajesh

Jul 13, 2008 | PC Desktops

1 Answer

I plugged my Memorex TravelDrive into my computer. It has always worked perfectly. This time I got the message that the USB device was not recognized and I can't get into my files.


THE FOLLOWING IS COURTESY OF MICROSOFT Help and Support

When you plug a USB device into a Windows XP-based computer immediately after the computer comes out of standby (S3) or hibernate (S4), the computer may not recognize the USB device. When this issue occurs, the USB device may be listed in Device Manager as an unknown device, and you may receive the following warning message:
Unrecognized device has been found.

This issue occurs because, when the computer comes out of S3 or S4, there is a five- to ten-second period when the selective suspend feature of the USB driver will interfere with detection of a new USB device connection. The time period depends on several factors. This includes the following factors:• Host controller hardware
• Attached hubs
• Attached devices
• USB driver versions
• Support for USB 2.0
• Additional system hardware or configurations that may change the timing
There may be other reasons that a USB device is not detected

Method 1
loadTOCNode(2, 'workaround'); After the computer comes out of S3 or S4, wait five to ten seconds before you plug the USB device into the computer or hub.

Method 2
After the computer comes out of S3 or S4, unplug the USB device, and then plug the device back into the computer or hub.

Method 3
Use the Device Manager to scan for new hardware. Follow these steps: 1. Click Start, click Run, type Devmgmt.msc, and then click OK..
2. On the Action menu, click Scan for hardware changes. This causes Windows to recognize new devices.
3. Close Device Manager and Control Panel.

Method 4
Disable power management of the USB hub.
Note If you perform the following procedure, you may also reduce the battery life on a portable computer.
To disable power management on the USB hub, follow these steps: 1. Click Start, click Run, type devmgmt.msc, and then click OK.
2. Expand the Universal Serial Bus controllers node, and then follow these steps for each USB Root Hub that is listed: a. Right-click the USB Root Hub, and then click Properties.
b. Click the Power Management tab.
c. Click to clear the Allow the computer to turn off this device to save power check box, and then click OK.

SIMILAR PROBLEMS AND SOLUTIONS loadTOCNode(1, 'moreinformation'); For more information about advanced troubleshooting tips for general USB problems, click the following article number to view the article in the Microsoft Knowledge Base: 310575 (http://support.microsoft.com/kb/310575/) Advanced troubleshooting tips for general USB problems in Windows XP For more information about how to troubleshoot unknown devices in Windows XP, click the following article number to view the article in the Microsoft Knowledge Base: 314464 (http://support.microsoft.com/kb/314464/) How to troubleshoot unknown devices that are listed in Device Manager in Windows XP







Try restarting the computer with the device in. Sometimes if you clear the memory that might help (stating the machine without memory then put it back and start it again).

Jul 01, 2008 | PC Desktops

1 Answer

When i connect my hard drive to my laptop the baloon comes up saying that usb device is unrecognized.


SYMPTOMS: loadTOCNode(1, 'symptoms'When you plug a USB device into a Windows XP-based computer immediately after the computer comes out of standby (S3) or hibernate (S4), the computer may not recognize the USB device. When this issue occurs, the USB device may be listed in Device Manager as an unknown device, and you may receive the following warning message:
To work around this issue, use one of the following methods:
Method 1 loadTOCNode(2, 'workaround'); After the computer comes out of S3 or S4, wait five to ten seconds before you plug the USB device into the computer or hub.
Method 2 loadTOCNode(2, 'workaround');After the computer comes out of S3 or S4, unplug the USB device, and then plug the device back into the computer or hub.
Method 2 loadTOCNode(2, 'workaround');After the computer comes out of S3 or S4, unplug the USB device, and then plug the device back into the computer or hub.
Method 4 loadTOCNode(2, 'workaround'); Disable power management of the USB hub.

Note If you perform the following procedure, you may also reduce the battery life on a portable computer.

To disable power management on the USB hub, follow these steps: 1. Click Start, click Run, type devmgmt.msc, and then click OK. 2. Expand the Universal Serial Bus controllers node, and then follow these steps for each USB Root Hub that is listed: a. Right-click the USB Root Hub, and then click Properties. b. Click the Power Management tab. c. Click to clear the Allow the computer to turn off this device to save power check box, and then click OK.-------------------------------------------
Please let me know your feed-back.

Thanks
dilipbagdi
Technical Associate

Apr 29, 2008 | PC Desktops

Not finding what you are looking for?
PC Desktops Logo

Related Topics:

135 people viewed this question

Ask a Question

Usually answered in minutes!

Top PC Desktops Experts

joecoolvette
joecoolvette

Level 3 Expert

5660 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18299 Answers

Are you a PC Desktop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...