AMI (American Megatrends)
The ROM BIOS (Basic Input Output System) is a program that provides the most basic
low level operations on the computer. The software is encoded in ROM (Read Only
Memory) its contents are not lost after powering off the PC.The delay between switching
on a PC and when it starts working is caused by the POST (Power On Self Test), programs
that test the functionality and initialise the PC
Accessing the BIOS - Vendors
Beeping BIOS Codes
Complete Software
Low level processor verification test failed
Clearing keyboard controller buffers failed
Keyboard controller reset failed
Low level keyboard controller interface test
Reading data from keyboard controller failed
System board support chip initialization failed
Processor register read/write verify test failed
CMOS timer initialization failed
8254 timer channel 0 test failed
8254 timer channel 1 test failed
8254 timer channel 2 test failed
CMOS power-on and time test failed
CMOS shutdown byte test failed
DMA channel 0 test failed
DMA channel 1 test failed
DMA page register test failed
Keyboard controller interface test failed
Memory refresh toggle test failed
First 64 KB memory test failed
Setup interrupt vector table failed
Video initialization failed
CTRL-ALT-ESC CTRL-ALT-INS
ROM BIOS Checksum failure
Programmable Interval Timer failure
DMA Initialisation failure
RAM test above 64K failure
DMA Page Register Read/Write failure
RAM Refresh Verification error
First 64K RAM Chip/Data Line failure
First 64K RAM Odd/Even Logic
Video ROM search proceeding
First 64K RAM: Address Line
First 64K RAM: Parity failure
Fail-Safe Timer Feature (EISA only)
Keyboard Controller failure
Software NMI Port failure (EISA only)
Slave DMA Register failure
First 64K RAM Chip/Data Line failure
Master Interrupt Mask Register failure
Slave Interrupt Mask Register failure
Unexpected Interrupt in Protected Mode
Voltage error or overheating
Keyboard Controller failure
CTRL+ALT+ESC, CTRL+ALT+DEL
CTRL+ALT+ESC, CTRL+ALT+DE
CTRL+ALT+INS after CTRL+ALT+DEL
Turn on computer by Holding down power button while pressing the ESC key.
The machine will beep, then display:
Check System, then press [F1] key.
2. Release ESC key
Award BIOS Password Crack
Enter DOS Prompt
DEBUG hit enter
-o 70 2e hit enter
-o 71 ff hit enter
-q hit enter
exit hit enter
AMI BIOS Backdoor Passwords
Award BIOS Backdoor Passwords
Certain Gigabyte motherboards BIOS contain hidden menus
To access the full BIOS menus press left CTRL-SHIFT-F1