Here is the tips for updating your BIOS when
your computer is not booting up
BIOS Update Procedure
All
latest Motherboards to day, 486/ Pentium / Pentium Pro etc., ensure that
upgrades are easily obtained by incorporating the system BIOS in a FLASH Memory component. With FLASH BIOS, there is no need to replace an EPROM component.
Once downloaded, the upgrade utility fits on a floppy disc allowing the user to
save, verify and update the system BIOS. A hard drive or a network drive can
also be used to run the newer upgrade utilities. However, memory managers
cannot be installed while upgrading.
Most
pre-Pentium motherboards do not have a Flash BIOS. The following instructions
therefore do not apply to these boards. If your motherboard does not have a
Flash BIOS (EEPROM) you will need to use an EPROM programmer to re-program the
BIOS chip. See your dealer for more information about this.
Please
read the following instructions in full before starting a Flash BIOS upgrade:
A.
Create a Bootable Floppy (in DOS)
•With
a non-formatted disk, type the following:
Format
a:/s
•If
using a formatted disk, type:
sys
a:
This
procedure will ensure a clean boot when you are flashing the new BIOS.
B.
Download the BIOS file
•Save
the BIOS file and the Flash Utility file in the boot disk you have created.
Unzip the BIOS file and the flash utility file. If you don't have an
"unzip" utility, download the WinZip for Windows 95 shareware/
evaluation copy for that one time use from _www.winzip.com or _www.pkware.com.
Most CD ROMs found in computer magazines, have a shareware version of WinZip on
them.
•You
should have extracted two files:
Flash
BIOS utility eg: flash7265.exe (for example)
BIOSeg: 6152J900.bin (example)
Use
the latest flash utility available unless otherwise specified (either on the
BIOS update page or in the archive file). This information is usually provided.
C.
Upgrade the System BIOS
During
boot up, write down the old BIOS version because you will need to use it for
the BIOS backup file name.
Place
the bootable floppy disk containing the BIOS file and the Flash Utility in
drive a, and reboot the system in MS-DOS, preferably Version 6.22
For
example:
flash625
615j900.bin
•From
the Flash Memory Writer menu, select "Y" to "Do you want to save
BIOS?" if you want to save (back up) your current BIOS (strongly
recommended), then type the name of your current BIOS and its extension after
FILE NAME TO SAVE: eg: a:\613J900.bin
Alternatively
select "N" if you don't want to save your current BIOS. Beware,
though, that you won't be able to recover from a possible failure.
•Select
"Y" to "Are you sure to program?"
•Wait
until it displays "Message: Power Off or Reset the system"
Once
the BIOS has been successfully loaded, remove the floppy disk and reboot the
system. If you write to BIOS but cannot complete the procedure, do not switch
off, because the computer will not be able to boo, and you will not be given
another chance to flash. In this case leave your system on until you resolve
the problem (flashing BIOS with old file is a possible solution, provided
you've made a backup before)
Make
sure the new BIOS version has been loaded properly by taking note of the BIOSidentifier as the system is rebooting.
For
AMI BIOS
Once
the BIOS has been successfully loaded, remove the floppy disk and reboot the
system holding the "END" key prior to power on until you enter CMOS
setup. If you do not do this the first time booting up after upgrading the
BIOS, the system will hang.
BIOSUpdate Tips
note:
1.Make
sure never to turn off or reset your computer during the flash process. This
will corrupt the BIOS data. We also recommend that you make a copy of your
current BIOS on the bootable floppy so you can reflash it if you need to. (This
option is not available when flashing an AMI BIOS).
2.
If you have problems installing your new BIOS please check the following:
Have
you done a clean boot?
In
other words, did you follow the above procedure for making a bootable floppy?
This ensures that when booting from "A" there are no device drivers
on the diskette. Failing to do a clean boot is the most common cause for
getting a "Memory Insufficient" error message when attempting to
flash a BIOS.
If
you have not used a bootable floppy, insure a clean boot either by
a)
pressing F5 during bootup
b)
by removing all device drivers on the CONFIG.SYS including the HIMEM.SYS. Do
this by using the EDIT command.
Have
you booted up under DOS?
Booting
in Windows is another common cause for getting a "MemoryInsufficient" error message when attempting to flash a BIOS. Make sure to
boot up to DOS with a minimum set of drivers. Important: Booting in DOS does
not mean selecting "Restart computer in MS-DOS Mode" from
Windows 98/95 shutdown menu or going to Prompt mode in Windows NT, but rather
following the above procedure (format a: /s and rebooting from a:\).
Have
you entered the full file name of the flash utility and the BIOS plus its
extension?
Do
not forget that often you will need to add a drive letter (a:\) before flashing
the BIOS. Example: when asked for file name of new BIOS file which is on your
floppy disk, in case you're working from c:\ your will need to type
a:\615j900.bin, rather than 615j900.bin only.
All The Best
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