Dell 755 manual System Messages, 351, Message Possible Cause Corrective Action

Code	Cause
3-4-2	Screen retrace failure
3-4-3	Search for video ROM failure
4-2-1	No timer tick
4-2-2	Shutdown failure
4-2-3	Gate A20 failure
4-2-4	Unexpected interrupt in protected mode
4-3-1	Memory failure above address 0FFFFh
4-3-3	Timer-chip counter 2 failure
4-3-4	Time-of-day clock stopped
4-4-1	Serial or parallel port test failure
4-4-2	Failure to decompress code to shadowed memory
4-4-3	Math-coprocessor test failure
4-4-4	Cache test failure

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	Possible Cause	Corrective Action
8042 Gate-A20	The keyboard controller	If you receive this message after you make
error	failed its test.	changes in the system setup program,
		enter the system setup program and
		restore the original value(s).

Address Line	An error in the address
Short!	decoding circuitry in the
	memory has occurred.

Reseat the memory modules (see "Memory" on page 313).

C:Drive Error

C:Drive Failure

Cache Memory Bad,

Do Not Enable

Cache

The hard drive is not working or is not configured correctly.

The cache memory is not operating.

Ensure that the hard drive is installed correctly in the computer (see the "Drives" section for your computer) and defined correctly in the system setup program (see "System Setup" on page 280).

See "Contacting Dell" on page 370 for instructions on obtaining technical assistance.

Solving Problems

351