This document applies to HP and Compaq computers with Windows 7.
This document describes common errors and general troubleshooting tips for Universal Serial Bus (USB) devices in Windows 7.
caution:Always follow manufacturer instructions for disconnecting USB devices from the computer. Some USB devices must be turned off and/or ejected before they are disconnected from the computer. Some other USB devices support the Windows Safely Remove Hardware feature.
note:To prevent the USB device from failing in the future: Do not connect too many devices to the computer; wait 5 seconds after plugging in a device before using it; use powered hubs to connect other devices; and do not attach USB devices when the system is busy (running slower than normal).
note:Do not use the Safely Remove Hardware icon to remove a memory card. To remove a memory card, use Windows to eject the card by following these steps:
note:If Texas Instruments XHCI Controller is not listed, then this is not what is causing the problem with your USB Device. Stop here, and try another suggested solution in this document.
note:If the USB ports still do not work, the wires connecting the USB board to the motherboard USB pins might not be securely connected. The computer might need to be serviced to connect the USB board wires to the motherboard connectors.
caution:This product contains components that can be damaged by electrostatic discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (such as a conductive foam pad), and wear an ESD wrist strap connected to a grounded surface.
note:When a computer uses legacy USB Support, a USB keyboard or mouse must have USB Legacy Support enabled in the BIOS to work with MS-DOS-based utilities and non-Windows modes. Before using the following steps, make sure a PS/2 mouse and keyboard are plugged in to the computer.