System information

Mac mini (Mid 2011) Symptom Charts — Communications 46
2011-07-21
3. With replacement AirPort/
Bluetooth card installed, does
computer start without kernel
panic?
Yes AirPort/Bluetooth card issue.
Issue resolved.
No Possible logic board issue.
Go to Kernel Panic/System
crashes symptom.
Ethernet Port/Device Issue
Unlikely cause: Adapter, internal drive(s), fan
Quick Check
Symptoms Quick Check
Ethernet Port/Device Issue
• No Ethernet device present
• Unable to access network
resources
• Ethernet device shows no
connection
• Ethernet device unable to an IP
address
• Slow network performance
1. Check the Ethernet cable for damage, try a
known good Ethernet cable – CAT5 or better
recommended for 100Mbps+ connections.
2. Check Ethernet ports on the Mac and wall/switch
for dust, debris, damage or bent pins.
3. Ensure distance from networking infrastructure is
less than 300 feet/ 105 meters
4. Verify port, cable and network hardware with a
known good system. Isolate rewall, MAC address
ltering or hardware access control devices
Isolate potential OS related issues by starting up
from another bootable device:
-from the same Mac mini model setup in Target
Disk Mode,
-from a compatible known-good up-to date Mac
OS X installed on an external drive,
-by pressing the Cmd-R keyboard keys while
restarting, to access the Mac OS X Utilities
available from Recovery HD.
Note: The computer may need to be connected
to a network with Internet access.