When I plug in my camera or ipod nothing happens

On the desktop, right click on MY COMPUTER, and then select MANAGE option. a new window will appear, in that select SYSTEM TOOLS, in that click on DEVICE MANAGER, on the right side of the window pane, a list wil appear,
If USB is enabled in BIOS or EFI but the USB host controller does not appear in Device Manager (under Universal Serial Bus controllers), or a yellow warning icon appears next to the host controller name, then the version of BIOS or EFI may be outdated. Contact the maker or vendor for your computer and obtain the current version of BIOS or EFI.
If the controller appears in Device Manager, right-click the controller name and then click Properties. Problems and suggested actions are displayed under Device status.
USB ports have a separate entry in Device Manager. To check the device status, click Universal Serial Bus controllers, right-click USB Root Hub, and then click Properties. If you do not see USB Root Hub, you might not have a USB port installed on your computer
On the USB Root hub Properties page, it may tell you this device is working properly, or there is a Troubleshoot button. At the bottom you have an option to Enable or Disable the USB hub.

USB ports were brought about in an attempt to standardize how we plug devices into a computer. Computer mice, keyboards, digital cameras, and many other electronic devices now utilize an USB port connection. A port that is not functioning as expected can be mission critical, or an infuriating annoyance at the least. A port that continuously turns off and on may not be broken, this maybe a "Power Management" feature of the device. USB ports can hibernate just as a computer or laptop do. If it's dozing off is not in your best interest, you can disable this feature.

Open "Start Menu", select "Settings", then menu item "Control Panel." In "Control Panel" window click open the "System" icon. When the "System Properties" box opens, select the "Hardware" tab, then click the "Device Manager" button. When "Device Manager" opens, click the at "Universal Serial Bus Controllers" to expand it. Right-click the first "USB Root Hub" item and select "Properties" from the menu. Select the "Power Management" tab. Clear the checkmark from Allow the computer to turn off this device to save power. Click "OK." Repeat these steps for all the "USB Root Hubs."

w7

First, please disconnect all USB devices and then perform the following steps:

Click "Start" button, type "devmgmt.msc" (without quotation marks) in the "Search" bar and press "Enter". Click "Continue" if necessary.

In Device Manager, double click to expand "Universal Serial Bus controllers", right click on the Host Controller, click "Uninstall" and click "OK".

Repeat the step 2 to uninstall all items under "Universal Serial Bus controllers".

Then, restart your computer and Windows 7 will reinstall all USB controllers automatically.

Solution 1 -

1. Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
2. Click to select your computer as the location for the scan.
3. On the Action menu, click Scan for hardware changes.
   
   Windows XP recognizes the new device.
4. Close the Device Manager window.

Solution 2 -

1. Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
2. Expand Universal Serial Bus controllers.
3. Right-click a USB Root Hub in the list, and then click Properties. The USB Root Hub Properties dialog box is displayed.
4. Click the Power Management tab.
5. Click to clear the Allow the computer to turn off this device to save power check box, and then click OK.
6. Repeat steps 3 through 6 for each USB Root Hub in the list.
7. On the Action menu, click Scan for hardware changes.
   
   Windows XP recognizes the new device.
8. Close the Device Manager window.

ok, the answer is pretty simple, ur usb ports connect to a internal hub, that hub is what has malfunctioned, u need to reinstall that device's driver though the device manager on vista, go to start, type device manager in the search box, click device manager in the list, a uac query will appear, click continue, on device manager go to universal serial bus controlers and click the +, right click the usb root hub and uninstall it, repeat that for all of the usb root hubs, then restart ur pc, it will automatically reinstall the devices with a fresh driver, plug in your usb device and it should work, have a great day and happy holidays

Are both PC's using the same operating system. Try removing all the usb root hubs from device manager then rebooting.
Device Manager > Universal Serial Bus Controllers > Uninstall or Delete any usb root hubs.

try uninstalling and reinstalling the apple software aND ALSO TRY UNINSTALLING ALL THE USB ROOT HUB FROM THE DEVICE MANAGER \

LINK FOR DEVICE MANAGER START RUN DEVMGMT.MSC RIGHT CLICK ON ALL USB ROOT HUB UNINSTALLL AND RESTART THE SYSTEM

Disable plug & play from BIOS. Now re-install the game and the required driver. From Control Panel--systems--Device Manager, check the properties of the Graphics card drivers and check if there is any clash of resources, if so then allot it manually. Hope this works....sodeep

1. Checking USB device status in Device Manager

1. Right-click My Computer on the Windows desktop and then click Properties.
2. Click the Device Manager tab to display the Device Manager window as shown at the right. (For Windows 2000 systems, click the Hardware tab and then the Device Manager button.
3. In the Device Manager list, click the + sign next to Universal serial bus controller.
4. Verify that a USB host controller and a USB root hub are listed below Universal serial bus.
   
5. If Universal serial bus controller, USB host controller or USB root hub are not listed, close the Device Manager and go to USB port incorrectly configured in BIOS
6. If Universal serial bus controller, USB host controller and USB root hub are listed but one or more display a yellow exclamation point, go to USB controller IRQ conflict
7. If you have Windows XP, right-click the Host Controller and select Properties from the drop-down menu. If you see this status message in the Properties window: The drivers for this device are not installed (code 28), go to Windows XP USB 2.0 driver not installed .
8. If Universal serial bus controller, USB host controller and USB root hub are listed but one or more display a red X, go to USB controller or root hub disabled in Windows Device Manager.

USB port incorrectly configured in BIOS NOTE: The procedure in this section is intended for advanced users only. Incorrect BIOS settings could prevent your computer from starting or operating normally. If you are not experienced in making changes to your computer BIOS, consult your computer instructions or contact your computer manufacturer for assistance before attempting the steps below.

1. Follow the instructions of your computer to view the BIOS settings. These settings are sometimes called CMOS settings or system setup.
2. To view the BIOS settings, press a key, such as F2 or Delete, just after you turn on the computer. Instructions often appear on the screen briefly when you turn on the computer. Also check the instructions and manuals provided with your computer.
3. Look for USB Interface or a similar setting in the Advanced Setup, Peripheral Configuration or another section of your computer BIOS settings.
4. Follow the onscreen instructions or read the computer documentation to enable the USB port.
5. Follow the onscreen instructions to save the new settings and restart the computer.

1. USB controller or root hub disabled in Windows Device Manager

1. Right-click My Computer on the Windows desktop and then click Properties.
2. Click the Device Manager tab. (On Windows 2000 and XP systems, click the Hardware tab and then the Device Manager button.)
3. In the Device Manager list, click the + sign next to Universal serial bus controller.
4. Click the line in the Device Manager containing the red X.
5. Click the Properties button. (On Windows 2000 and XP systems, click Properties on the Action menu.)
6. In the Communications Port Properties box, click the Resources tab.
7. Re-enable the USB device by clicking the Enable Device button and follow the onscreen instructions.