Dell T605, DR715 owner manual Troubleshooting the Mouse, 163

Troubleshooting the Mouse

Problem

•System message indicates a problem with the mouse.

•Mouse is not functioning or is functioning improperly.

Action

1Check to see if the mouse cable has disconnected from the system.

2Swap the faulty mouse with a working mouse.

If the problem is resolved, replace the faulty mouse.

3If other USB devices are connected to ports adjacent to the keyboard and mouse USB ports, power off the devices and disconnect them from the USB ports.

An overcurrent event on another USB device will cause both the keyboard and mouse to stop functioning.

If the mouse and keyboard do not immediately return to operation after disconnecting the other USB devices, restart your system. If the mouse and keyboard operations are restored after system restart, reconnect the disconnected USB devices and power them on one at a time.

If mouse and keyboard operation do not return after system restart, proceed to the next step.

4Reset the system BIOS to the default settings by setting the

NVRAM_CLR jumper inside your system. Use the following procedure.

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the system and protecting against electrostatic discharge.

aTurn off the system and attached peripherals and unplug the system from the power source.

bOpen the system. See "Opening the System" on page 68.

cRemove the expansion card shroud. See "Removing the Expansion Card Shroud" on page 72.

Troubleshooting Your System

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