Identify Beep Codes

POST checks to see that all the hardware in the computer is operating correctly. If a device is malfunctioning, an error or beep code alerts the technician that a problem has occurred. Typically, a single beep denotes that the computer is functioning properly. If a hardware problem exists, the computer may emit a series of beeps. Each BIOS manufacturer uses different codes to indicate hardware problems. Table 3-1 is a sample chart of beep codes. The beep codes for your computer may be different. Consult the motherboard documentation to view beep codes for your computer.
Table 3-1 Sample Beep Codes
Table 3-1 Sample Beep Codes
|
Beep Code |
Meaning |
Cause |
|
1 beep (no video) |
Memory refresh failure |
Bad memory |
|
2 beeps |
Memory parity error |
Bad memory |
|
3 beeps |
Base 64K memory failure |
Bad memory |
|
4 beeps |
Timer not operational |
Bad motherboard |
|
5 beeps |
Processor error |
Bad processor |
|
6 beeps |
8042 gate A20 failure |
Bad CPU or motherboard |
|
7 beeps |
Processor exception |
Bad processor |
|
8 beeps |
Video memory error |
Bad video card or memory |
|
Beep Code |
Meaning |
Cause |
|
9 beeps |
ROM checksum error |
Bad BIOS |
|
10 beeps |
CMOS checksum error |
Bad motherboard |
11 beeps Cache memory bad Bad CPU or motherboard
11 beeps Cache memory bad Bad CPU or motherboard
Continue reading here: Describe the BIOS Setup
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