Dell DR715, T605 owner manual Troubleshooting Serial I/O Problems

dLocate the NVRAM_CLR jumper on your system board (see "System Board Jumpers and Connectors" on page 197) and set the jumper to the clear position (see Table 6-2).

eInstall the expansion card shroud. See "Installing the Expansion Card Shroud" on page 75.

fClose the system. See "Closing the System" on page 70.

gReconnect the system and peripherals to power and restart.

If the mouse and keyboard are operational, proceed to the next step.

If the mouse and keyboard are still not operational, see "Getting Help" on page 205.

hRepeat step a through step c.

iSet the NVRAM_CLR jumper to the default position (see Table 6-2).

jInstall the expansion card shroud. See "Installing the Expansion Card Shroud" on page 75.

kClose the system. See "Closing the System" on page 70.

lReconnect the system and peripherals to power and restart.

mEnter the System Setup program and reenter any custom BIOS settings that were reset. Be sure to leave all USB ports enabled.

Troubleshooting Serial I/O Problems

Problem

•Error message indicates a problem with a serial port.

•Device connected to a serial port is not operating properly.

Action

1Enter the System Setup program and ensure that the serial port is enabled and configured correctly for your program. See "Entering the System Setup Program" on page 43.

2If the problem is confined to a particular program, see the program documentation for specific port configuration requirements that the program may require.

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Troubleshooting Your System