Operation with BIOS Setup. Part II

All modern models of motherboards of other producers supply operation with profiles, but the commands’ titles and the aims of function keys will be different. Let’s have a short look at some features of operation with BIOS profiles of leading producers.

ASUS. Two profiles for saving BIOS profiles are available in a number of new motherboards by ASUS. These commands can be found in the section “Tools” or subsection “Tools ► Asus О.С. Profile”.

You can select the command “Save to Profile 1/2” to save the current settings in the form of a profile, and the command “Load from Profile 1/2” – to restore settings from saved profile. The command “Start O.C. Profile” allows saving settings in the form of a file on a floppy or flash disks and also recovering saved settings from them.


MSI. There is a section “USER SETTINGS” for operation with profiles in the main menu of BIOS Setup of some boards by MSI. Here you will find the command “Save Settings” for saving settings into one of available profiles, and the command “Load Settings” – for recovering settings out of the profile.

Examples of Editing BIOS Setup Parameters. Part II

Imagine that you have to boot your computer from start up disk, for example, with distribution of Windows. The “boot order” in the BIOS needed to be changed to allow CD drive to be the first boot device.

The sequence for change of bootable device for BIOS with horizontal menu bar would be a little different.

  1. Reboot your computer and enter BIOS Setup.
  2. Select “Boot” in the main menu by pressing the keys ← and →. Remember or write down the current values of parameters.
  3. Select “First Boot Device” by pressing the keys ↓ and ↑ and set CDROM (CD/DVD) using one of methods mentioned above.                                                                                                         1-300x168
  4. Go to Exit by pressing the keys ← and → and select “Exit&Save Changes”. Confirm your action by pressing Enter in appeared window.
  5. Try to boot from CD and then return the former value of the “1st Boot Device” parameter.

Error Messages. Part VI

In this article you can find the main error messages for AMIBIOS and AwardBIOS.


Secondary Master Hard Disk Fail;

Secondary Slave Hard Disk Fail

An error of the hard disk connected to IDE channel Secondary Master or Secondary Slave.
Secondary Master Hard Disk S.M.A.R.T. Status Bad

Secondary Slave Hard Disk S.M.A.R.T. Status Bad

Self-test function of hard disks S.M.A.R.T. warns about a possible failure of the drives connected to Secondary Master or Secondary Slave channel.
Software Port NMI Inoperational An error of NMI interruption.
Serial Presence Detect (SPD) device data missing or inconclusive Misread data from SPD chip where the parameters of operating memory are stored.
System Halted, (Ctrl-Alt-Del) to reboot The system was halted because of a serious error. Pressing Ctrl+Alt+Del will allow rebooting the computer.
Unknown PCI error Unknown PCI bus error. It is necessary to check functioning of all PCI-devices.
Update Failed;

Update OK

This message occurs after the system configuration update and shows its successful (Update OK) or unsuccessful (Update Failed) ending.
VIRUS: Continue (Y/N)? The system has found signs of virus activity, for example an attempt to format the cylinder/head/sector of the hard disk. A user may press Y to continue operation or N to finish it.
Warning! CPU has been changed or Overclock fail;

Warning! No system is in Safe Mode. Please reset overcklocking Features in the Setup Menu

The system boots in safe mode after unsuccessful attempt to overclock the computer. Check for speed value of the system bus and processor multiplying ratio.
Your computer case had been opened. Press SPACE to continue;

Intruder Detection Error

Some systems have got a function which controls case opening in the system block. If the case had been opened, you will see this message on your display and may continue booting by pressing SPACE.

Error Messages. Part V

In this article you can find the main error messages for AMIBIOS and AwardBIOS.


Press ESC to skip Memory Test After the occurrence of the message, you may press ESC to permit a full memory test that will speed the POST passing.
Press F1 to disable NMI, F2 to reboot An error of NMI interruption. Pressing F1 will allow blocking NMI, and F2 – its rebooting.
Press TAB to show POST Screen This message informs that the user will see a window with POST messages after pressing TAB, if there is a logo of motherboard manufacturer or another image.
Primary Boot Device Not Found The device, stated as the primary one for booting in BIOS, was not found.
Primary IDE Channel no 80 conductor cable installed 40 conductor cable is used on the primary IDE channel instead of 80 one. This may significantly decrease the speed of data exchange between a hard disk and controller.
Primary Master Hard Disk Fail;

Primary Slave Hard Disk Fail

An error of the hard disk, connected to IDE-channel Primary Master or Primary Slave. Make sure you have connected a disk and set a jumper properly, try to replace 40- or 80-conductor cable. Check disk parameters in BIOS and set appropriate values if necessary.
Primary Master Hard Disk S.M.A.R.T. Status Bad;

Primary Slave Hard Disk S.M.A.R.T. Status Bad

Self-test function of hard disks S.M.A.R.T. warns about a possible failure of the drives connected to Primary Master or Primary Slave channel.
PS2 Keyboard Not Found;

PS2 Mouse not found

Keyboard or mouse, connected to PS2 port, were not found. Check the device connection to the system block and if an error does not disappear after changing the keyboard or mouse, then the PS2 controller is faulty.
Resuming from disk, Press TAB to show POST screen This message occurs during the system recovery form a hard disk. Press TAB and the window with POST messages will appear.

Error Messages. Part IV

In this article you can find the main error messages for AMIBIOS and AwardBIOS.


Mem Optimal Error A memory size in A channel does not comply with a memory size in B channel, as a result, the performance of the memory may be decreased.
Memory Parity Error A memory parity error. An error address may be additionally given.
Memory test fail;

Memory verify error at


The errors were found during testing of operating memory. The information on their types and address may be additionally given.
Missing Operating System; Missing OS;


No Operating System Found;

Not Boot Device Available

Operating system is missed (damaged) or boot device is unavailable. Check if the boot sequence in BIOS, connection and parameters of boot device (it is usually a hard disk) are correct.
NVRAM Checksum Error;

NVRAM Cleared;

NVRAM Data Invalid

NVRAM checksum error, the data are cleared.
NVRAM Cleared by Jumper NVRAM data were cleared with the help of a jumper on a motherboard.
OC fail, please enter setup to change OC Fail settings An overclocking of the system was failed. Check the frequency values of the SBus and multiplying processor ratio.
Operating System Not Found Operating System was not found on a boot device.
Override enabled – Defaults Loaded The system could not boot using the current parameters of CMOS configuration, so all values were downloaded by default.
Parity Error;

RAM parity error – checking for segment

Parity error. A source or address of an error may be given additionally.
PCI I/O Port Conflict;

PCI IRQ Conflict;

PCI Memory Conflict

Two PCI-devices try to use the same recourse: I/O port, IRQ or Memory. Check the functionality of the devices and parameters of resource allocation.
Press a key to reboot The system will reboot after pressing any key. This phrase usually occurs after a message about some critical error.

Error Messages. Part III

In this article you can find the main error messages for AMIBIOS and AwardBIOS.

ERROR – Can’t Write ESCD It is impossible to record information on the system configuration. Perhaps, the NVRAM microchip is faulty.
Error Encountered Initializing Hard Drive: Error Initializing Hard Disk Controller An error of initializing of the hard disk or IDE-controller.
Fdd Controller Failure; Floppy Disk(s) Fail (80);

Floppy Disk Controller Error Or No Controller Present

An error of initializing of the floppy drive or its controller. Check for proper connection of the floppy drive, correctness of loops functioning and the parameters of the floppy drive in BIOS. If an error does not disappear, the floppy drive or its controller is faulty.
Floppy Disk(s) Fail (40) The type of the floppy drive is incorrect. Check for its parameters in BIOS. If an indicator is permanently on, then a loop connection error is possible.
HARD DISK initializing. Please wait a moment This message may occur with identification of some outdated disks that require additional time for this procedure
Hard Disk(s) Fail;

Hard Disk(s) Diagnosis Fail; Hard Disk Install Failure; HDD Controller Failure

An error of identification of the hard disk or IDE-controller on the motherboard. Check for the correct connection of a disk, correct loops functioning, jumper settings and disk parameters in BIOS.
INTR #1 Error;

INTR #2 Error

An error of the first (INTR #1) and second (INTR #2) interrupt controller.
Invalid Boot Diskette An error while booting from a diskette.
KB/Interface Error;

Keyboard Error;

Keyboard controller error;

Keyboard error or no keyboard present;

Keyboard failure, press [F1] to continue

An error of the keyboard or its controller. Check if the keyboard is connected to the system block, make sure that there aren’t any press keys on it. If an error does not disappear after changing the keyboard, then the keyboard controller is damaged.
Keyboard is locked…

Unlock it;

Keyboard is locked out…

Unlocked key

It is necessary to unlock keyboard with the help of security dongle.

Error Messages. Part II

In this article you can find the main error messages for AMIBIOS and AwardBIOS.

CH-2 Timer Error An error of the second timer of the motherboard.
Checking NVRAM The computer configuration is updated. If successful, a message “Update OK” will occur, if unsuccessful – “Update Failed”.
CMOS Battery State Low;

CMOS Battery Failed;

System Battery is Dead

CMOS battery on the motherboard is low and needs to be replaced. Sometimes this error occurs because of low-quality battery contacts, and in this case they should be stripped.
CMOS Checksum Failure;

CMOS Checksum Error – Defaults Loaded

CMOS Checksum Error. All BIOS parameters will be set by default. This error occurs because of CMOS data failure which may be caused by dead battery, virus or forced reset. Having corrected the problem, it is necessary to install BIOS parameters again.
CMOS Memory Size Mismatch;

Memory size has changed since last boot

Memory size does not coincide with CMOS data. Check the amount of set memory in BIOS Setup and exit with saving all changing.
CMOS System Options Not Set The values saved in CMOS are either wrong or do not exist. An error may occur because of low battery.
CMOS Time and Date Not Set Dates and Times saved in CMOS have been lost or have not been set. Check them.
CPU Has Been Changed Or CPU Ratio Changed Fail Bus frequency or processor multiplying ratio have been changed (perhaps, after unsuccessful attempt of overclocking).
Disk Boot Failure, Insert System Disk And Press Enter A booting device (for example, CD, DVD, hard or floppy disk) was not found.
Diskette Boot Failure An error while booting from a floppy.
DMA Error;

DMA #2 Error;

DMA #1 Error;

DMA Bus Time out

DMA controller error. The numbers of DMA channels #1 or #2 may be indicated.
ECC Error;

Multi-Bit ECC Error;

Uncorrectable ECC DRAM Error

The memory failure was happened and it cannot be corrected by Error Correction Codes (ECC). Perhaps, the problem memory module should be replaced.

Error Messages. Part I

If, while booting, your system has initialized video adapter, then a monitor will display messages in the course of booting. If a critical error occurs, the process will stop with displaying an appropriate message. If an error is non-critical, a message will be displayed but the booting may continue.

In this article you can find the main error messages for AMIBIOS and AwardBIOS.

8042 Gate – A20 Error; Gate 20 Error An error of line 20 which manages the keyboard controller. Perhaps, it is faulty or needs to be replaced.
Address Line Short Memory addressing scheme error. If an error does not disappear after rebooting, the chipset is probably faulty.
Bad Cache Memory – Do not Enable Cache-memory is faulty.
Bad PNP Serial ID Checksum A checksum error of identification number of Plug and Play device. Perhaps, it was caused by failure of a device or its bad connection.
BIOS ROM Checksum error – System halted The system has blocked because of incorrect BIOS checksum. BIOS code needs to be recovered.
BIOS Update For Installed CPU Failed An error of microcode update of CPU. Perhaps, the current version of BIOS is not aligned with a model of the processor used.
BootSector Write! Recording on the boot sector of the hard drive is found. It may mean the virus incursion. While setting operating system and some other operations, it is necessary to access record in boot sector with the help of BIOS.
C: (D:) Drive Error;

C: Drive Failure;

Drive Error C: (D:)

Drive Error C: (D:). It occurs in outdated motherboards. You can find its causes and solutions in the error “Primary Master Hard Disk Fail”.
Cache Memory Bad Cache-memory is faulty and needs to be replaced. You can try to boot the system by disconnecting cache-memory with the help of BIOS, but the system performance will significantly decrease.

Audible BIOS Tones and Troubleshooting Tools. Part III

If the computer does not boot with or without an audible tone and the screen image does not appear, one may use the following tips for troubleshooting.

  1. Switch off the computer and switch it on after some time.
  2. If the rebooting had led to an error again, switch off the computer and check the devices are connected correctly, pins reliability in slots and connectors, integrity of connecting cables and loops and other.
  3. Probably, the computer does not boot because of unsuccessful overclocking or setting of some BIOS parameters. In this case, one should reset all BIOS settings with the help of jumper on the motherboard or using any other available method.
  4. If the BIOS audible tones show the failure of a particular device, try to replace it if it is possible. Sometimes the faulty device may be identified incorrectly according to the meanings of audible tones, because most devices are interconnected and influence one another.
  5. If the replacement of the faulty device is impossible or unsuccessful, try to boot the computer with minimal amount of devices (motherboard, processor, operating memory and video adapter), disconnecting all drives, expansion boards and peripherals.


Do not forget that you may connect or disconnect all devices after the computer has been fully switched off.

  1. If the system starts in minimal configuration, try to connect some booting device (CD/DVD, hard disk or floppy disk drive) or boot the operating system. If successful, gradually connect all other elements and check the system operation.

Audible BIOS Tones and Troubleshooting Tools. Part II

Audible Tones of AMIBIOS

Tone Meaning
1 short No errors were detected, booting continues
2 short An error of memory parity
3 short The first 64 Kbytes of operating memory are faulty
4 short A system clock is faulty
5 short A processor is faulty
6 short A keyboard controller is faulty
7 short A motherboard is faulty
8 short An error of video memory
9 short BIOS check sum is incorrect
10 short A write error in CMOS-memory
11 short An error of cash-memory
1 long and 2 short A video adapter is faulty
1 long and 3 short
2 long and 2 short An error of a floppy disk controller
No tones A power supply or motherboard are faulty


Audible Tones of AwardBIOS

Tone Meaning
1 short No errors, booting continues
Continuous or repeated short A power supply is faulty, a circuit in supplying lines or an error of memory
1 long or repeated long An error of memory
1 long and 2 short No video adapter was detected or an error of video memory
1 long and 3 short Depending on BIOS version such tone may mean an error of video adapter or an error of keyboard
3 long An error of keyboard controller
1 long and 9 short An error of BIOS reading or BIOS microchip is faulty
2 short Non-critical error was detected. Such tone is usually accompanied by a message on a display with more specific description of an error. A user may continue booting by pressing F1 or enter BIOS Setup by pressing Delete
No tones A power supply or motherboard are faulty