Showing posts with label Bios Codes. Show all posts
Showing posts with label Bios Codes. Show all posts
How to Reset Your BIOS Password
This method can come in very handy in the event you ever lose and forget your BIOS password or if you acquire used computers where the unknown previous owners had BIOS passwords set (in fact, this happened to me long ago—I was given a used computer, but there was no way I could enter the CMOS to make changes). It's important to note here that the password we are talking about is only the one that prevents a user from entering the BIOS setup at bootup, not the one that stops you from getting past the boot.
Normally, at bootup you can press a key (usually the DEL key) to access your BIOS allowing you to view it or make changes. With a password set, there is no way to enter setup. Though a password can provide a basic and very effective level of PC security, losing it can be a real headache if you don't know how to fix the problem.
The MS-DOS command that will makes this trick possible is the DEBUG command (debug itself is a utility—debug.exe—which is located in your Windows Command folder). This is not a command to be taken lightly—in other words, it's not a command to play with! You can cause serious corruption with this command and can end up not being able to even boot your computer! Debug is used to work with binary and executable files and allows you to alter (hex edit) the contents of a file or CPU register right down to the binary and byte level.
To begin debug mode, type debug at a MS-DOS prompt or you can specify a file, i.e., DEBUG FILE.EXE. There is a difference in screen output between the two methods. When you type DEBUG alone, debug responds with a hyphen (-) prompt waiting for you to enter commands. The second method, with a file specified, loads the file into memory and you type all the commands on the line used to start debug. In this tip, we will be writing to the BIOS, so the first method is the one that would be used. All debug commands can be aborted at any time by pressing CTRL/C.
Accessing BIOS with DEBUG
The basic trick will be to fool the BIOS into thinking there is a checksum error, in which case it resets itself, including the password. This is done by invalidating the CMOS and to do that we must know how to access the BIOS and where the checksum value of the CMOS is located so that we can change it. Access to the the BIOS content is via what are known as CMOS Ports and it's Port 70 and 71 that will give us the needed access. On almost all AT motherboards, the checksum is located at hexadecimal address 2e and 2f and filling the address 2e with ff is all you should have to do to invalidate the checksum.
Here's what to do if you ever need to reset the password and have no other method, and you don't want to open up your computer to remove the battery or jumpers.
Note! Do this at your own risk. I can only tell you that it has worked for me more than once and has worked for others as well. But I cannot make any guarantees. When I did this, I took a willing risk. The BIOS was Award Modular BIOS v4.51PG
Restart your computer in MS-DOS mode.
When you get to the C:\> or C:\WINDOWS> prompt, type DEBUG and press Enter.
A hyphen (-) prompt will appear waiting for you to enter commands.
Enter the following commands, pressing Enter after each one. Note: the o is the letter o and stands for OUTPUT.
o 70 2e
o 71 ff
q
After the q command (which stands for QUIT), enter Exit.
Then try to enter your BIOS at bootup. The password prompt should now be gone and you should now have full access to it again. However, you will now be at the default BIOS setttings and may want to change them to your preference. You may also want to have your drives autodetected again.
In closing, I should state that in the case of a lost BIOS password, your first step should always be to contact your manufacturer to see if a backdoor password is available that will allow you to bypass the forgotten password.
There are many sites on the net that list backdoor passwords you can try, but beware that some BIOS that are set up to lock up if you enter the wrong password more than a certain number of times, usually only 3 times!
11:30 AM 0
How To Byepass BIOS Passwords : The Smart Way
Introduction to BIOS Passwords
The best method to reset a BIOS password depends on what BIOS the computer has. Common BIOS's include AMI, Award, IBM and Phoenix. Numerous other BIOS's do exist, but these are the most common.Some BIOS's allow you to require a password be entered before the system will boot. Some BIOS's allow you to require a password to be entered before the BIOS setup may be accessed.
The general categories of solutions to reset a BIOS password are:
- Using a Backdoor BIOS Password
- Resetting the BIOS Password using Software
- Resetting the BIOS Password using Hardware
- Vendor Specific Solutions for resetting the BIOS Password
Using a Backdoor BIOS Password
Some BIOS manufacturers implement a backdoor password. The backdoor password is a BIOS password that works, no matter what the user sets the BIOS password to. These passwords are typically used for testing and maintenance. Manufacturers typically change the backdoor BIOS passwords from time to time.AMI Backdoor BIOS Passwords
Reported AMI backdoor BIOS passwords include A.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI, and PASSWORD.Award Backdoor BIOS Passwords
One reported Award backdoor BIOS password is eight spaces. Other reported Award backdoor BIOS passwords include 01322222, 589589, 589721, 595595, 598598 , ALFAROME, ALLY, ALLy, aLLY, aLLy, aPAf, award, AWARD PW, AWARD SW, AWARD?SW, AWARD_PW, AWARD_SW, AWKWARD, awkward, BIOSTAR, CONCAT, CONDO, Condo, condo, d8on, djonet, HLT, J256, J262, j262, j322, j332, J64, KDD, LKWPETER, Lkwpeter, PINT, pint, SER, SKY_FOX, SYXZ, syxz, TTPTHA, ZAAAADA, ZAAADA, ZBAAACA, and ZJAAADC.Phoenix Backdoor BIOS Passwords
Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX.Backdoor BIOS Passwords from Other Manufacturers
Reported BIOS backdoor passwords for other manufacturers include:Remember that what you see listed may not be the actual backdoor BIOS password, this BIOS password may simply have the same checksum as the real backdoor BIOS password. For Award BIOS, this checksum is stored at F000:EC60.
Manufacturer BIOS Password VOBIS & IBM merlin Dell Dell Biostar Biostar Compaq Compaq Enox xo11nE Epox central Freetech Posterie IWill iwill Jetway spooml Packard Bell bell9 QDI QDI Siemens SKY_FOX SOYO SY_MB TMC BIGO Toshiba Toshiba
Resetting the BIOS Password using Software
Every system must store the BIOS password information somewhere. If you are able to access the machine after it has been booted successfully, you may be able to view the BIOS password. You must know the memory address where the BIOS password is stored, and the format in which the BIOS password is stored. Or, you must have a program that knows these things.You can write your own program to read the BIOS password from the CMOS memory on a PC by writing the address of the byte of CMOS memory that you wish to read in port 0x370, and then reading the contents of port 0x371.
!BIOS will recover the BIOS password for most common BIOS versions, including IBM, American Megatrends Inc, Award and Phoenix.
CmosPwd will recover the BIOS password for the following BIOS versions:
- ACER/IBM BIOS
- AMI BIOS
- AMI WinBIOS 2.5
- Award 4.5x/4.6x/6.0
- Compaq (1992)
- Compaq (New version)
- IBM (PS/2, Activa, Thinkpad)
- Packard Bell
- Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
- Phoenix 4 release 6 (User)
- Gateway Solo - Phoenix 4.0 release 6
- Toshiba
- Zenith AMI
Resetting the BIOS Password using Hardware
If you cannot access the machine after if has been powered up, it is still possible to get past the BIOS password. The BIOS password is stored in CMOS memory that is maintained while the PC is powered off by a small battery, which is attached to the motherboard. If you remove this battery, all CMOS information (including the BIOS password) will be lost. You will need to re-enter the correct CMOS setup information to use the machine. The machines owner or user will most likely be alarmed when it is discovered that the BIOS password has been deleted.On some motherboards, the battery is soldered to the motherboard, making it difficult to remove. If this is the case, you have another alternative. Somewhere on the motherboard you should find a jumper that will clear the BIOS password. If you have the motherboard documentation, you will know where that jumper is. If not, the jumper may be labeled on the motherboard. If you are not fortunate enough for either of these to be the case, you may be able to guess which jumper is the correct jumper. This jumper is usually standing alone near the battery. If you cannot locate this jumper, you might short both of the points where the battery connects to the motherboard.
If all else fails, you may have to clear the BIOS password by resetting the RTC (Real Time Clock) IC (Integrated Circuit) on your motherboard.
Many RTC's require an external battery. If your RTC is one of this type, you can clear the BIOS password just by unsocketing the RTC and reseating it.
RTC's which require external batteries include:
- Dallas Semiconductor DS12885S
- TI benchmarq bq3258S
- Motorola MC146818AP
- Hitachi HD146818AP
- Samsung KS82C6818A
You will see more than one option for some chips due to testing by various people in the field. Remember to remove power from the system before shorting these pins.
You should be able to discover how to reset the BIOS password stored in most RTC (Real Time Clock) chips by reading the manufacturers data sheet for that RTC. Some RTC's, like the Dallas DS1287 and TI benchmarq bq3287mt cannot be cleared. The solution to resetting the BIOS password on systems with those RTC's is to purchase a replacement RTC chip. How inconvenient!
RTC Chip Pins Dallas DS1287ATI benchmarq bp3287AMT 3 (N.C.) and 21 (NC/RCL) Chips & Technologies P82C206 12 (GND) and 32 (5V)-or-74 (GND) and 75 (5V) OPTi F82C206 3 and 26 Dallas Semiconductor DS12887A 3 (N.C.) and 21 (RCLR)
i Hope You guys enjoyed the Article, Enjoy Hacking, Enjoy Hackplanet.
12:23 PM 0
How to Bypass BIOS Passwords Ultimate Hack
very recently , One of ma frnd come over me to tell him how to byepass the BIONS password, as he forgot his Passwrd for His lappy.
So Obviously i do researched no the same, n here is the Output.
BIOS passwords can add an extra layer of security for desktop and laptop computers. They are used to either prevent a user from changing the BIOS settings or to prevent the PC from booting without a password. Unfortunately, BIOS passwords can also be a liability if a user forgets their password, or changes the password to intentionally lock out the corporate IT department. Sending the unit back to the manufacturer to have the BIOS reset can be expensive and is usually not covered in the warranty. Never fear, all is not lost. There are a few known backdoors and other tricks of the trade that can be used to bypass or reset the BIOS
DISCLAIMER
This article is intended for IT Professionals and systems administrators with experience servicing computer hardware. It is not intended for home users, hackers, or computer thieves attempting to crack the password on a stolen PC. Please do not attempt any of these procedures if you are unfamiliar with computer hardware, and please use this information responsibly. LabMice.net is not responsible for the use or misuse of this material, including loss of data, damage to hardware, or personal injury.
Before attempting to bypass the BIOS password on a computer, please take a minute to contact the hardware manufacturer support staff directly and ask for their recommended methods of bypassing the BIOS security. In the event the manufacturer cannot (or will not) help you, there are a number of methods that can be used to bypass or reset the BIOS password yourself. They include:
Using a manufacturers backdoor password to access the BIOS
Use password cracking software
Reset the CMOS using the jumpers or solder beads.
Removing the CMOS battery for at least 10 minutes
Overloading the keyboard buffer
Using a professional service
Please remember that most BIOS passwords do not protect the hard drive, so if you need to recover the data, simply remove the hard drive and install it in an identical system, or configure it as a slave drive in an existing system. The exception to this are laptops, especially IBM Thinkpads, which silently lock the hard drive if the supervisor password is enabled. If the supervisor password is reset without resetting the and hard drive as well, you will be unable to access the data on the drive.
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Backdoor passwords
Many BIOS manufacturers have provided backdoor passwords that can be used to access the BIOS setup in the event you have lost your password. These passwords are case sensitive, so you may wish to try a variety of combinations. Keep in mind that the key associated to "_" in the US keyboard corresponds to "?" in some European keyboards. Laptops typically have better BIOS security than desktop systems, and we are not aware of any backdoor passwords that will work with name brand laptops.
WARNING: Some BIOS configurations will lock you out of the system completely if you type in an incorrect password more than 3 times. Read your manufacturers documentation for the BIOS setting before you begin typing in passwords
Award BIOS backdoor passwords:
ALFAROME ALLy aLLy aLLY ALLY aPAf _award AWARD_SW AWARD?SW AWARD SW AWARD PW AWKWARD awkward BIOSTAR CONCAT CONDO Condo d8on djonet HLT J64 J256 J262 j332 j322 KDD Lkwpeter LKWPETER PINT pint SER SKY_FOX SYXZ syxz shift + syxz TTPTHA ZAAADA ZBAAACA ZJAAADC 01322222
589589 589721 595595 598598
AMI BIOS backdoor passwords:
AMI AAAMMMIII BIOS PASSWORD HEWITT RAND AMI?SW AMI_SW LKWPETER A.M.I. CONDO
PHOENIX BIOS backdoor passwords:
phoenix, PHOENIX, CMOS, BIOS
MISC. COMMON PASSWORDS
ALFAROME BIOSTAR biostar biosstar CMOS cmos LKWPETER lkwpeter setup SETUP Syxz Wodj
OTHER BIOS PASSWORDS BY MANUFACTURER
Manufacturer Password
VOBIS & IBM merlin
Dell Dell
Biostar Biostar
Compaq Compaq
Enox xo11nE
Epox central
Freetech Posterie
IWill iwill
Jetway spooml
Packard Bell bell9
QDI QDI
Siemens SKY_FOX
TMC BIGO
Toshiba Toshiba
TOSHIBA BIOS
Most Toshiba laptops and some desktop systems will bypass the BIOS password if the left shift key is held down during boot
IBM APTIVA BIOS
Press both mouse buttons repeatedly during the boot
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Password cracking software
The following software can be used to either crack or reset the BIOS on many chipsets. If your PC is locked with a BIOS administrator password that will not allow access to the floppy drive, these utilities may not work. Also, since these utilities do not come from the manufacturer, use them cautiously and at your own risk.
Cmos password recovery tools 3.1
!BIOS (get the how-to article)
RemPass
KILLCMOS
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Using the Motherboard "Clear CMOS" Jumper or Dipswitch settings
Many motherboards feature a set of jumpers or dipswitches that will clear the CMOS and wipe all of the custom settings including BIOS passwords. The locations of these jumpers / dipswitches will vary depending on the motherboard manufacturer and ideally you should always refer to the motherboard or computer manufacturers documentation. If the documentation is unavailable, the jumpers/dipswitches can sometimes be found along the edge of the motherboard, next to the CMOS battery, or near the processor. Some manufacturers may label the jumper / dipswitch CLEAR - CLEAR CMOS - CLR - CLRPWD - PASSWD - PASSWORD - PWD. On laptop computers, the dipswitches are usually found under the keyboard or within a compartment at the bottom of the laptop.
Please remember to unplug your PC and use a grounding strip before reaching into your PC and touching the motherboard. Once you locate and rest the jumper switches, turn the computer on and check if the password has been cleared. If it has, turn the computer off and return the jumpers or dipswitches to its original position.
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Removing the CMOS Battery
The CMOS settings on most systems are buffered by a small battery that is attached to the motherboard. (It looks like a small watch battery). If you unplug the PC and remove the battery for 10-15 minutes, the CMOS may reset itself and the password should be blank. (Along with any other machine specific settings, so be sure you are familiar with manually reconfiguring the BIOS settings before you do this.) Some manufacturers backup the power to the CMOS chipset by using a capacitor, so if your first attempt fails, leave the battery out (with the system unplugged) for at least 24 hours. Some batteries are actually soldered onto the motherboard making this task more difficult. Unsoldering the battery incorrectly may damage your motherboard and other components, so please don't attempt this if you are inexperienced. Another option may be to remove the CMOS chip from the motherboard for a period of time.
Note: Removing the battery to reset the CMOS will not work for all PC's, and almost all of the newer laptops store their BIOS passwords in a manner which does not require continuous power, so removing the CMOS battery may not work at all. IBM Thinkpad laptops lock the hard drive as well as the BIOS when the supervisor password is set. If you reset the BIOS password, but cannot reset the hard drive password, you may not be able to access the drive and it will remain locked, even if you place it in a new laptop. IBM Thinkpads have special jumper switches on the motherboard, and these should be used to reset the system.
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Overloading the KeyBoard Buffer
On some older computer systems, you can force the CMOS to enter its setup screen on boot by overloading the keyboard buffer. This can be done by booting with the keyboard or mouse unattached to the systems, or on some systems by hitting the ESC key over 100 times in rapid succession.
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Jumping the Solder Beads on the CMOS
It is also possible to reset the CMOS by connecting or "jumping" specific solder beads on the chipset. There are too many chipsets to do a breakdown of which points to jump on individual chipsets, and the location of these solder beads can vary by manufacturer, so please check your computer and motherboard documentation for details. This technique is not recommended for the inexperienced and should be only be used as a "last ditch" effort.
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Using a professional service
If the manufacturer of the laptop or desktop PC can't or won't reset the BIOS password, you still have the option of using a professional service. Password Crackers, Inc., offers a variety of services for desktop and laptop computers for between $100 and $400. For most of these services, you'll need to provide some type of legitimate proof of ownership. This may be difficult if you've acquired the computer second hand or from an online auction.
Hopes u enjoy the trick.
Enjoy Hacking. Enjoy Hackton
6:30 AM 0
List Of Master Bios Passwords For All Motherboard Manufactures
| System/BIOS Manufacturer | Known master passwords |
| Advanced Integration | Advance |
| AMI BIOS | 589589 A.M.I. aammii AM AMI AMI_SW AMI!SW AMI?SW AMI.KEY ami.key AMI.KEZ ami.kez AMI~ AMIAMI AMIDECOD AMIPSWD amipswd AMISETUP bios310 BIOSPASS CMOSPWD helgaßs HEWITT RAND KILLCMOS |
| AmpTRon | Polrty |
| AST | SnuFG5 |
| Award BIOS | ?award 013222222 13222222 1EAAh 256256 589589 589721 admin alfarome aLLy aPAf award award_? award.sw award sw award_ps AWARD_PW AWARD_SW AWARD SW awkward BIOS bios* biosstar biostar CONCAT condo CONDO CONDO, djonet efmukl g6PJ h6BB HELGA-S HEWITT RAND HLT j09F j256 j262 j322 j64 lkw peter lkwpeter LKWPETER PASSWORD SER setup SKY_FOX SW_AWARD SWITCHES_SW Sxyz SZYX t0ch20x t0ch88 TTPTHA ttptha TzqF wodj ZAAADA zbaaaca zjaaadc |
| Biostar | Biostar Q54arwms |
| Compaq | Compaq |
| Concord | last |
| CTX International | CTX_123 |
| CyberMax | Congress |
| Daewoo | Daewuu |
| Daytek | Daytec |
| Dell (some) | Dell |
| Digital Equipment (DEC) | komprie |
| Enox | xo11nE |
| Epox | cenTRal |
| Freetech | Posterie |
| Hewlett-Packard (VecTRa) | hewlpack |
| IBM | IBM MBIUO merlin sertafu |
| IWill | iwill |
| Jetway | spooml |
| Joss Technology | 57gbzb technolgi |
| Leading Edge | MASTER |
| M Technology | mMmM |
| MachSpeed | sp99dd |
| Magic-Pro | prost |
| Megastar | star |
| Micron | sldkj754 xyzall |
| Micronics | dn_04rjc |
| Nimble | xdfk9874t3 |
| Packard Bell | bell9 |
| Phoenix | phoenix |
| QDI | QDI |
| Quantex | teX1 xljlbj (or: x1jlbj) |
| Research | Co12ogro2 |
| RM (Server BIOS) | RM |
| Shuttle (Spacewalker) | Spacve |
| Siemens-Nixdorf | SKY_FOX |
| SpeedEasy | lesarot1 |
| SuperMicro | ksdjfg934t |
| Tinys | tiny |
| TMC | BIGO |
| Toshiba | Toshiba 24Banc81 toshy99 |
| VexTRec | VexTRex |
| Vobis | merlin |
| Zenith | 3098z Zenith |
| ZEOS | zeosx |
8:22 AM 0
How To Byepass BIOS Password : Hacking Tricks
Recover from a CMOS memory-affecting virus or work around a boot-time password by making BIOS forget all it once knew.
A PC goes through a process when it is first turned on: the Power-On Self-Test, or P.O.S.T. Some system boards provide security measures [Hack#1] that demand a password before beginning the P.O.S.T. process or allowing you into the BIOS setup program.
The original IBM-PC (1981) did not provide any security measures or a BIOS setup program; all it had was a P.O.S.T. If you needed to configure a PC, you did it with switches and jumpers. A program to set up the system BIOS and configuration did not come along until the IBM-PC/AT (1984), and it had to be run from a special boot-up diskette. The idea of providing a user interface and access to the system configuration settings within the BIOS did not come along until about 1986. Today no PC system is made without this valuable built-in setup feature. Eventually, the security feature of password-protecting access to the system came along.
If, after turning on your PC, you are prompted for a password instead of greeted with a fancy logo screen or the technical gibberish that suggests the system is getting ready to let you use it, then a security feature has been turned on that we call a " pre-boot password." Without the right password to get past this point, the system is basically dead in the water—game over, do not pass go and collect $200—unless or until you reset the BIOS setting. But how do you do that without getting past the password to the setup program?
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The goal is to get the system to forget that it needs a password and forget what the password was. The password data is stored with the rest of the system configuration data in a small amount of memory that is kept alive using a small battery or internal power cell. To clear out the data, you need to remove the power from this memory element. This means the system will also lose any system configuration that was saved. You'll need to later reconfigure the system parameters so you can boot your operating system.
To perform this hack you will need:
-
A #1 or #2 Phillips-head screwdriver, or (less likely) a T-15 TORX driver or a 1/4" hex nutdriver, to open the case
-
Needle-nosed pliers if you are working with jumpers
-
A small flashlight or headlamp
With tools at hand, perform the following steps:
-
Turn the PC off (this means a total shutdown, not merely standby or hibernate mode) and disconnect the AC power cord.
-
Remove the cover from your system (this step may require tools, undoing a thumbscrew, or flipping a latch or two).
-
Change the switch setting or jumper position to a specific position or remove the jumper entirely as prescribed in the manual to clear or reset the CMOS memory.
-
Wait 20-30 seconds for the memory to clear out from lack of power.
-
After 20-30 seconds put the switch or jumper the way it was before for normal use.
-
Reconnect the power cord and start up the system to see if the settings have changed to defaults.
-
Shut the PC down, disconnect the power cord, replace the cover, reconnect the power, and power up the PC.
If your system does not have a "reset CMOS" jumper or switch , the only option is to locate and remove the coin-style battery cell (or on some very old PCs, the battery pack), as shown in Figure 1-2, that provides the power to the CMOS memory.
Figure 1-2. System board with coin-style battery used to retain CMOS memory
Follow Steps 1 and 2 above, locate the battery, and remove it. Leave the battery out of the system for 20-30 seconds, replace it, and start up the system. The CMOS memory in some systems may retain settings longer than others. If the CMOS memory does not clear and you're still stuck, you may need to leave the battery out for several hours before reinstalling it.Once the system is able to perform P.O.S.T. and to start booting up the system, you will need to get into the Setup program for the BIOS and make a few basic adjustments, such as:
-
Selecting auto-detect or manually setting specific parameters for IDE hard drives
-
Setting the boot-device order—diskette drive, hard drive, CD-ROM, etc.
If you expect to perform more hacks with jumpers, switches, cables, chips, or disk drives, you'll probably find it convenient to leave the cover off your PC, but beware: we do not want to cause more trouble than we're trying to solve. You could be exposing yourself to dangerous voltages (inside the power supply) or exposing the internal wires and connections to disk drives and plug-in cards to your tools, screws, and other wires that could come in contact with them. At this stage, spilling your favorite beverage or dropping your tools anywhere inside the PC chassis is not advised.
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8:33 PM 0
Al Bios Beep Code - Both AMI And Pheonix Beep Codes: Learn Latest Computer And Mobile Hacking Tricks
AMI BIOS Beep Codes
Code Description
1 Short Beep System OK
2 Short Beeps Parity error in the first 64 KB of memory
3 Short Beeps Memory failure in the first 64 KB
4 Short Beeps Memory failure in the first 64 KB Operational of memory
or Timer 1 on the motherboard is not functioning
5 Short Beeps The CPU on the motherboard generated an error
6 Short Beeps The keyboard controller may be bad. The BIOS cannot switch to protected mode
7 Short Beeps The CPU generated an exception interrupt
8 Short Beeps The system video adapter is either missing, or its memory is faulty
9 Short Beeps The ROM checksum value does not match the value encoded in the BIOS
10 Short Beeps The shutdown register for CMOS RAM failed
11 Short Beeps The external cache is faulty
1 Long, 3 Short Beeps Memory Problems
1 Long, 8 Short Beeps Video Card Problems
Phoenix BIOS Beep Codes
Note – Phoenix BIOS emits three sets of beeps, separated by a brief pause.
Code Description
1-1-3 CMOS read/write failure
1-1-4 ROM BIOS checksum error
1-2-1 Programmable interval timer failure
1-2-2 DMA initialisation failure
1-2-3 DMA page register read/write failure
1-3-1 RAM refresh verification failure
1-3-3 First 64k RAM chip or data line failure
1-3-4 First 64k RAM odd/even logic failure
1-4-1 Address line failure first 64k RAM
1-4-2 Parity failure first 64k RAM
2-_-_ Faulty Memory
3-1-_ Faulty Motherboard
3-2-4 Keyboard controller Test failure
3-3-4 Screen initialisation failure
3-4-1 Screen retrace test failure
3-4-2 Search for video ROM in progress
4-2-1 Timer tick interrupt in progress or failure
4-2-2 Shutdown test in progress or failure
4-2-3 Gate A20 failure
4-2-4 Unexpected interrupt in protected mode
4-3-1 RAM test in progress or failure>ffffh
4-3-2 Faulty Motherboard
4-3-3 Interval timer channel 2 test or failure
4-3-4 Time of Day clock test failure
4-4-1 Serial port test or failure
4-4-2 Parallel port test or failure
4-4-3 Math coprocessor test or failure
Low 1-1-2 System Board select failure
Low 1-1-3 Extended CMOS RAM failure
If U know Any other code related to bios , pls do comment for my visitors.
10:18 PM 0
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