Dell OptiPlex GXi Service Manual page 57

Table 3-1. POST Beep Codes (continued)
Beep Code Error
3-3-4 Screen initialization failure
3-4-1 Screen-retrace test failure
3-4-2 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-port test failure
4-4-2 Parallel-port test failure
4-4-3 Math coprocessor failure
4-4-4 Cache test failure
Probable Causes
Faulty video subsystem
(defective system board)
Defective system board
Faulty or improperly seated
DIMM
Defective system board
Bad battery or defective
system board
Faulty I/O chip (defective
system board)
Faulty microprocessor chip or
system board
Defective microprocessor or
system board
Beep Codes and Error Messages 3-3