Table 3-1. Post Beep Codes - Dell Dimension XPS H266 Service Manual

3-2 Dell Dimension XPS H233 and XPS H266 Systems Service Manual

Table 3-1. POST Beep Codes

Beep Code Error
1 Memory refresh failure.
2 Memory parity error.
3 Memory failure occurred in
first 64 KB of main memory.
4 Timer failure.
5 Microprocessor error.
6 Gate A20 failure.
7 Microprocessor-exception
interrupt error.
8 Video memory read/write
error.
9 ROM checksum value does
not match value encoded in
system BIOS.
10 NVRAM shutdown register
read/write error.
11 Cache memory error.
1–2 No video adapter detected.
1–3 No monitor detected.
Probable Causes
Defective system board.
A SIMM is faulty. Replace
all of the SIMMs.
Defective system board.
A SIMM is faulty. Replace
all of the SIMMs.
A SIMM is faulty. Replace
all of the SIMMs.
Defective system board.
Defective microprocessor.
Defective system board.
Defective microprocessor.
System's video adapter is
missing or faulty.
Corrupted system BIOS
program.
Defective system BIOS
chip.
Defective system board.
Defective microprocessor.
Defective or missing video
adapter.
Defective or missing
monitor.