Power surge on usb hub port in compaq nc 6120 laptop

Check whether there is any metallic debris in one of your USB ports.
If there is not, then there may be some something coming into contact with the circuitry leading to the USB ports that is causing the short. If that is the case, then you'll have to take the laptop apart yourself or take it in for service.

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.

Yeah--I've seen that before and perhaps you can check it out by unplugging all USB devices and restarting the computer. If you still get that message, go into your control panel and under device manager remove all the USB devices. Restart the computer and let it find the devices again. If the problem persists, you have a motherboard issue. Might be OK, but if you can isolate the particular hub that is giving you the problem, avoid using it.

your usb hub is exceeding the power limit or you are attaching a device that is extracting more more , use a USB 2.0 port HUB with a power adapter if you are attaching more devices on hub

check all of your usb ports to make sure none of the contacts are touching each other and none have broken

hi, Please reinstall the chipset drivers and "Turn off the error messages from Device Manager => USB Host Controller => Advanced Tab => check mark "Don't tell me about USB errors"

Don't Use existing USB Portn On your Comp if u want USB port then install PCI USB Card From the PCI USB card you can use your USB Device what ever you want to use

Thanks
Ankur

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.

Some USB devices draw excessive power from the USB port, especially USB scanners. When this happens you need a powered USB hub, connect this to your computer's USB port and connect the USB device into the powered USB hub, you should not have any further error power surge problems.

1st prob. - I appears there is a loose connection problem somewhere - try reseating your RAN and hard disk.
Try to determine which part of the laptop is causing the problem, not moving the laptop around the room but by flexing different parts of the laptop and power cable etc. while it is on your table.

2nd prob -
Some USB devices draw more power than the USB port can provide and you get the error message - "exceeded power limit".
In these cases you will need to purchase a powered USB hub, connect this hub to the laptops USB port and connect the offending USB device into the powered USB hub.