| Beep Codes |
Error |
Probable Causes |
| 1 |
Memory refresh failure. |
Defective system board. |
| 2 |
Error occurred in first 64 KB of main memory. |
Faulty DIMM or defective system board. |
| 3 |
Read or write error occurred in first 64 KB of main
memory. |
Faulty DIMM. |
| 4 |
Timer on system board malfunctioned. |
Defective system board. |
| 5 |
Microprocessor error. |
Defective microprocessor. |
| 6 |
Gate A20 failure. |
Defective system board. |
| 7 |
Microprocessor-exception interrupt error. |
Defective microprocessor. |
| 8 |
Video memory read/write error. |
Missing or faulty video adapter. |
| 9 |
ROM checksum value does not match value encoded in
system BIOS. |
Corrupted system BIOS program or defective system
BIOS chip. |
| 10 |
CMOS shutdown register
read/write error. |
Defective system board. |
| 11 |
Cache memory error. |
Defective microprocessor or cache card. |
