Mobile hard drive plugged into computer, no response.

Many users in the process of using a computer, when the mobile hard disk connected to the computer, the computer has no response. But on other computers, you can find the hard drive.

This situation occurs because the USB interface does not allocate a interrupt number (IRQ) in the BIOS, so the system does not recognize and use the USB interface device properly.

To resolve this situation, you can reboot the computer, enter with the BIOS settings, the Assign IRQ for USB entry is enabled in PNP/PCI configurations, and the system will assign the available interrupt address to the USB interface. This allows you to use a USB device.