Usb Problems; Usb Device Does Not Work; Usb Device Does Not Work During Startup - HP Compaq Troubleshooting Manual

USB Problems

USB device does not work

■
If the device requires external power, be sure that it is plugged
securely into an electrical outlet as well as into a USB connector on
the notebook.
■
Verify that the device is functioning properly by connecting it to a
USB connector on another system.
■
Verify with the device manufacturer that you are using the correct
driver(s).
■
Use the Device Manager utility in your operating system to check for
and resolve any resource conflicts.

USB device does not work during startup

Refer to your model-specific documentation for information about USB
legacy support. (USB legacy support enables a USB device, such as an
optional external keyboard or mouse, to function during startup, before
Windows loads.)
Troubleshooting
Problems and Solutions
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