System Messages - Dell XPS 720 Owner's Manual

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System Messages

NOTE:
If the message you received is not listed in the table, see the documentation for either the operating system
or the program that was running when the message appeared.
Message
8042 Gate-A20
error
Address Line
Short!
C: Drive Error
C: Drive Failure
Cache Memory Bad,
Do Not Enable
Cache
70
Troubleshooting
Cause
Screen retrace failure
Search for video ROM failure
No timer tick
Shutdown failure
Gate A20 failure
Unexpected interrupt in protected mode
Memory failure above address 0FFFFh
Timer-chip counter 2 failure
Time-of-day clock stopped
Serial or parallel port test failure
Failure to decompress code to shadowed memory
Math-coprocessor test failure
Cache test failure
Possible Cause
The keyboard controller
failed its test.
An error in the address
decoding circuitry in the
memory has occurred.
The hard drive is not working
or is not configured correctly.
The cache memory is not
operating.
Corrective Action
If you receive this message after you make
changes in the system setup program,
enter the system setup program and
restore the original value(s).
Reseat the memory modules (see
"Memory" on page 90).
Ensure that the hard drive is installed
correctly in the computer (see "Hard
Drive" on page 108) and defined correctly
in the system setup program (see "System
Setup" on page 168).
See "Contacting Dell" on page 181 for
instructions on obtaining technical
assistance.