1 beep - System boot successfull *1beep - Refresh failure - (NO VIDEO) memory refresh failure (bad memory) 2 beeps - 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 mainboard 7 beeps - Processor exception interput error - bad processor 8 beeps - Display memory read/write failure - bad video card or memory 9 beeps - ROM checksum error - bad BIOS 10 beeps - CMOS shutdown register read/write error - bad motherboard 11 beeps - Cache memory bad - bad CPU or motherboard 12 beeps - BIOS rom file incorrect size - The BIOS ROM file found does not match the size of the flash device 13 beeps - BIOS rom image mismatch - The BIOS ROM file layout configuration does not match image present in the flash device 5 short + 1 long beeps - Memory error - No memory detected in the memory slots. 6 short + 1 long beeps - Memory error - EDO memory detected in system 7 short + 1 long beeps - SMBUS error