Pengeluar BIOS dan Beep Codes I

Terdapat 8 pengeluar BIOS :

• AMI BIOS ( American Megatrends Inc )
• Compaq BIOS
• AST BIOS
• Mylex BIOS
• Quadtel BIOS
• Award BIOS
• Phoenix BIOS
• IBM BIOS

 Beep Codes :

Fungsi Beep Codes adalah mengesan kerosakan komponen-komponen komputer kita semasa kita melalui proses POST ( Power On Self Test ).Setiap BIOS mempunyai  berbeza Beep Codes.

Bagi AMI BIOS Beep Codes ialah :

Beeps	Error Message	Description
1 short	DRAM refresh failure	The programmable interrupt timer or programmable interrupt controller has probably failed
2 short	Memory parity error	A memory parity error has occurred in the first 64K of RAM.  The RAM IC is probably bad
3 short	Base 64K memory failure	A memory failure has occurred in the first 64K of RAM.  The RAM IC is probably bad
4 short	System timer failure	The system clock/timer IC has failed or there is a memory error in the first bank of memory
5 short	Processor error	The system CPU has failed
6 short	Gate A20 failure	The keyboard controller IC has failed, which is not allowing Gate A20 to switch the processor to protected mode. Replace the keyboard controller
7 short	Virtual mode processor exception error	The CPU has generated an exception error because of a fault in the CPU or motherboard circuitry
8 short	Display memory read/write error	The system video adapter is missing or defective
9 short	ROM checksum error	The contents of the system BIOS ROM does not match the expected checksum value.  The BIOS ROM is probably defective and should be replaced
10 short	CMOS shutdown register read/write error	The shutdown for the CMOS has failed
11 short	Cache error	The L2 cache is faulty
1 long, 2 short	Failure in video system	An error was encountered in the video BIOS ROM, or a horizontal retrace failure has been encountered
1 long, 3 short	Memory test failure	A fault has been detected in memory above 64KB
1 long, 8 short	Display test failure	The video adapter is either missing or defective
2 short	POST Failure	One of the hardware testa have failed
1 long	POST has passed all tests

 
Compaq BIOS Beep Codes :

Beeps	Error Message	Description
1 short	No error	System is booting properly
1 long, 1 short	BIOS ROM checksum error	The contents of the BIOS ROM to not match the expected contents.  If possible, reload the BIOS from the PAQ
2 short	General error	Unknown
1 long, 2 short	Video error	Check the video adapter and ensure it's seated properly.  If possible, replace the video adapter
7 beeps (1 long, 1s, 1l, 1 short, pause, 1 long, 1 short, 1 short	AGP video	The AGP video card is faulty.   Reseat the card or replace it outright.  This beep pertains to Compaq Deskpro systems
1 long neverending beep		Memory error. Bad RAM. Replace and test
1 short, 2 long	Bad RAM	Reseat RAM then retest; replace RAM if failure continues