POST Message Description
20X A failure occurred during testing of the memory. This error can be
caused by incorrectly installed memory, a failing DIMM, or a
system-board failure.
Action:
1. If you have added memory, see Installing Options in Your
Personal Computer and “Configuring Your Computer” on
page 22 of this booklet to verify that the new memory is
correct for your computer, and that it is installed and
configured correctly.
2. Run the diagnostic programs to verify the problem. (See
“Diagnostic Programs” on page 96 for information about
diagnostic programs provided with your computer.)
If the problem cannot be isolated and corrected, have the computer
serviced.
301
303 A failure occurred during testing of the keyboard and keyboard
controller. These error messages also might be accompanied by
continuous beeping.
Action:
Ensure that:
1. Nothing is resting on the keyboard and pressing a key.
2. No key is stuck.
3. The keyboard cable is securely attached to the keyboard
connector on the computer. (For the location of the keyboard
connector, refer to “External Connectors” on page 10.)
Note: If you have just connected a new mouse or other pointing
device, turn the computer off and disconnect that device.
Wait at least 5 seconds, and then turn the computer on. If
the error message goes away, replace the device. If the
error message remains, have the keyboard and cable or the
computer serviced.
Chapter 5. Solving Problems 71