Error occur when any usb devices is attached to my hp dv4450

I think the problem lies in a damaged USB controller on the laptop. The fact that none of the ports work, indicates that either the power to the ports has failed, or more likely the circuitry controlling the USB hub has failed. Sadly You will most likely need to replace the motherboard

It is referring to the USB ports on the back of your computer near where your keyboard plugs in. The front ones must be USB 1.1 which will cause this error.

This laptop ( HP Pavilion DM4) doesn't has a bluetooth. You could bought detachable bluetooth 'anywhere' for price not more then $ 6. Attach your new device to usb port then play....

Unistalled the USB Generic Root Hub Drivers from the Device Manager by right clicking on the generic root hubs and then restart the notebook and This will fix this issue for you....:)

OK if you have anything plugged into the USB Ports at bootup, unless Keyboard or Mouse, remove everything, and see if it boots normally, if it does, then the "Hub" you are using may be faulty, or a device you are using is drawing a lot of current at switch on and overloading the USB bus, that can only supply 500mA. If it still does it, and you do use a USB KB & Mouse, then remove them one at a time & reboot, between, and see if it was one of them causing the problem. If you have nothing attached then your internal USB bus is flaky.

Hi,

Try updating BIOS and check and also try the reinstalling the USB roots hubs again

its better take it to the technician , i think the problem is in the mother board

This error occures when a USB device draws more power than the USB port can supply.
To fix this problem, purchase a powered USB hub. Power up the hub and connect it to the laptop's USB port and then plug the USB device into the powered USB hub.

you need to enable your usb ports, the camera it is a usb device, you should go to your bios and enable usb ports, this ill resolve your problem

Thanks
Vcrtech

Although you have internal wireless, you are capable of attaching an external wireless device. For example, you could attached a D-Link WUA-1340 USB Wireless G adapter (http://www.dlink.com/products/?sec=0&pid=477), or, if you have a PCI port, you can use a Linksys WPC300N Wireless-N Notebook adapter (http://www.linksys.com/servlet/Satellite?c=L_Product_C2&childpagename=US%2FLayout&cid=1144763513196&pagename=Linksys%2FCommon%2FVisitorWrapper&lid=1319686869B07). Either device with any brand will work just like your internal wireless. In fact, because you chose to use an external device, you may get a better wireless signal. Because internal wireless devices are inside the computer, it is more difficult to received a signal than with an external device.