© National Instruments | 5-1
5
Troubleshooting
This chapter answers common troubleshooting questions you may have when using the
PXIe-8840 embedded computer.
What if the PXIe-8840 does not boot?
Several problems can cause a controller not to boot. Here are some things to look for and
possible solutions.
Things to Notice:
• Which LEDs come on? The Power OK LED should stay lit. The Drive LED should blink
during boot as the disk is accessed.
• What appears on the display? Does it hang at some particular point (BIOS, Operating
System, and so on)? If nothing appears on the screen, try a different monitor. Does your
monitor work with a different PC? If it hangs, note the last screen output that you saw for
reference when consulting National Instruments technical support.
• What has changed about the system? Did you recently move the system? Was there
electrical storm activity? Did you recently add a new module, memory chip, or piece of
software?
• Refer to your chassis user manual for additional troubleshooting steps.
Things to Try:
• Make sure the chassis is plugged in to a working power source.
• Check any fuses or circuit breakers in the chassis or other power supply (possibly a UPS).
• Make sure the controller module is firmly seated in the chassis.
• Remove all other modules from the chassis.
• Remove any nonessential cables or devices.
• Try the controller in a different chassis.
• Try a similar controller in this same chassis.
• Clear the CMOS. (Refer to the System CMOS section of Chapter 2, Installation and
Configuration.)
• Recover the hard drive on the controller. (Refer to the Hard Drive Recovery section of
Chapter 2, Installation and Configuration.)
• Make sure the RAM is properly seated.
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