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DX38BT don't boot after a recovery BIOS

I removed jumper and I did a recovery with the BIOS v1478, all ok on screen old version replaced by new etc., after computer ask me to reboot, and when I reboot the computer, I see the CDROM flash and 5 sec. after the computer reboot and I get nothing after. I suspect, the recovery method erase the old BIOS and didn't write the new, I used this method to upgrade the BIOS because the express method return always the old version after I executed that.
-CMOS battery ok 3.09 Volts
- file .BIO always on the CDROM.


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  • Ben1234 Mar 07, 2008

    I already read this procedure, and I always obtain the same thing.

  • Ben1234 Mar 07, 2008

    I lost the communication on the chat when I click on the link in your answer.

  • Ben1234 Mar 07, 2008

    Thanks you for yours comments.


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Hello there....

what happened???why did the chat close??

Posted on Mar 07, 2008

  • 2 more comments 
  • isaac johny
    isaac johny Mar 07, 2008

    just visit this have the troubleshooting procedure.....

    just follow this ,,,,,you should be able to retrace back



  • isaac johny
    isaac johny Mar 07, 2008

    ok ok ...that i dint kno.....

  • isaac johny
    isaac johny Mar 07, 2008

    ben - actually the bios is chip like thing...

    its just a matter of few microseconds that takes to flash the chip and recode it with new codes..

    when you are updating the information is stored in the RAM...

    usually when we restart the ram stores nothin...but during this time
    its different ...the RAM stores the info that needs to be burned in the bios chip..

    **NOTE: there should be no voltage fluctuation during this process...(do you have it there)

    in the new board (from 2005-till date) there are dual for back-up

  • isaac johny
    isaac johny Mar 07, 2008

    if any thing goes wrong it should troubleshoot it....

    in the older boards the chip is directly embedded on to the board no choice of replacing have to take it to trash.

    but as you said it was a new one may have an option of replacing the chip if the provision is there on your board.....

    so take it to a tech...i wish it dont go to trash....

    thankyou for responding here....



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CMOS error

This error is not the same as a CMOS Checksum Error, which refers to corrupted values of the CMOS settings, the ones you set through the BIOS setup program. This error means the contents of the BIOS code itself are damaged.

Diagnosis: The BIOS ROM chip on the motherboard is probably faulty. It could also be another component on the motherboard.

You should make sure that all of the BIOS settings in the system are correct, by rebooting the system, going into BIOS setup and double-checking all the values (hopefully against a recent hardware or software change

If you have reset the CMOS memory you need to go into the BIOS setup screen and reconfigure the BIOS. To do that you need to press a key while the computer is booting. Usually F2 but can be other keys. It should tell you on the bottom of the first screen which key to press to enter BIOS setup.

If you don't know the settings you should be one for optimal defaults - use that one. You will also need to reset the time and date.

In the main or system setup screen you should be able to see the date and time

Using your arrow keys navigate to the date and change the date.

Once highlighted on the month, day, or year, press your arrow keys or your page up / page down keys to change the date.

Save, Exit and re-boot and everything should then work.

During the boot process you will see on the screen to press delete to enter setup
Press and hold delete during the boot up process to enter BIOS you can load failsafe defaults or load optimized defaults ,press escape then press f10 to save to cmos to restart

hope this helps you

Dec 07, 2011 | Intel Desktop Board DH61WW Classic Series...

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Bios boot password on a Toshiba c655-s5049

When you boot up to the log in screen type in administrator as user to log in if you cant log in

during the boot up process you will see on the screen for a short amount of time press a certain key to enter set up

Press and hold that key during the boot up process to enter BIOS scroll down to set user password or supervisor password you can change or remove your password from there


The most common way that most of us know on how to reset or clear the BIOS password is to physically remove the power from the computer by disconnecting the power plug and then removing a battery for 30 minutes from the motherboard. Another way is to reset the clear CMOS jumper on the motherboard itself. Both of the 2 methods mentioned works because most motherboards use a battery to sustain the BIOS/CMOS settings for the motherboards PROM chip. So by cutting off the battery power, the BIOS/CMOS settings will be erased.
hope this helps dont forget to vote!

Feb 25, 2011 | Toshiba Computers & Internet

2 Answers

How to remove bios passoword

Remove the CMOS battery for about 30 minutes....If this is a desktop pc.Often times this will reset back to no password.Laptops are much harder.Alot of times you cannot reset a laptop bios password.

Apr 04, 2010 | Matsonic MS9087C Motherboard

2 Answers

Checksum Error after Bios Upgrade K7VZA

Have you tried resetting the CMOS? Often, after upgrading BIOS you need to clear the CMOS and re-setup to handle the new features. You should have a jumper to clear CMOS, or you can remove the power from the system and remove the battery for a few seconds to clear it.

Let me know if this clears up your issue.

Sep 19, 2009 | EliteGroup K7VZA Motherboard

2 Answers

How to break bios password

remove CMOS battery for 1 minute then try to install it back

Jun 08, 2009 | Intel D945GCCR Motherboard

1 Answer

Dell GX110, como remover en password del BIOS (CMOS)????????? ya removi la bateria!

This information is intended for experienced users. It is not intended for basic users, hackers, or computer thieves. Please do not try any of following procedures if you are not familiar with computer hardware. I'll not be responsible for the use or misuse of this information, including personal injury, loss of data or hardware damage. So use it at your own risk.

A. By Using the Motherboard Jumper:

In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.

Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.

When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.

Make sure to turn the PC off before opening the cabinet and resetting the jumper.

B. By Using Software:

I have found that BIOS/CMOS Password Recovery Tool is the most effective.:
BIOS/CMOS Password Recovery Tool is a program that works instantly to remove any lost or forgotten BIOS/CMOS password. Simply boot your PC to DOS and execute the program, and get access to forgotten BIOS/CMOS passwords in just seconds

BIOS/CMOS Password Recovery Tool Service:

Mar 22, 2009 | Dell Optiplex GX110 (2909T) Motherboard

1 Answer

P4s533 mainboard

Reset BIOS back to default
1) remove M/board battery for 5 to 10 minutes
while booting press the DEL or F2 or ctrl+esc
or check lower part of screen during boot will tell you hoe to fet into BIOS
Once BIOS reset to default boot computer if OK.
you can change BIOS to suite CPU etc

Oct 29, 2008 | ASUS P4S533-MX Motherboard

1 Answer

T60 after Bios Update to Ver. 2.22 no Video

I do not know if this will work
1)open case
2) check motherboard for word which will say reset bios or words to that effect nearby will be a small 2 or 3 pin connector with the 2 pin remove the jumper from 1 pin and fit over both reboot and turn off straight away refit jumper back over 1 pin and reboot see what happen it may work
with 3 pin setup jumper will already be over 2 pin remove and fit over middle and the other pin remove reboot etc
Usually a failed bios update is more often than not fatal
hope this works for you if it does post favorable rating thanks

Jul 29, 2008 | IBM (10l1433) (  10L1433)...

4 Answers

P5NT won't boot

Have you tried clearing the CMOS by removing the battery with PSU off and then shorting the 'reset cmos" (or similar) pins on mobo?

Also found this on the ASUS web site under the specs for the P5NT WS board...

01.gif ASUS CrashFree BIOS 2
The CrashFree BIOS2 feature now includes the BIOS auto-recovery function in a support DVD. Users can reboot their system through the support DVD when a bootable disk is not available, and go through the simple BIOS auto-recovery process. ASUS motherboards now enable users to enjoy this protection feature without the need to pay for an optional ROM.

Have you tried this?

Jul 26, 2008 | ASUS P5NT WS (P5NT WS GREEN) Motherboard

1 Answer

Motherboard problem

i think the bios is corrupted ...
just change the bios jumper to the recovery mode in the motherboard ...
the information on how to change jumper to the recovery mode you can just refer your motherboard manual .....

after recovery you must replace the jumper to the normal position then after that the bios will boot & you can save it ...

any doubts you can reply me
i am always here to assist you
thank you
rate my solution ..

Jul 11, 2008 | ASUS S478 VIA P4V533-MX Motherboard

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