Toshiba Portege m100

[Bev]

Hi All
Help needed to get around the bios password for the toshiba portege m100 laptop for a 3- 4 year old laptop.

 

[DuaneJackson]

Isn't there a reset jumper on the motherboard? Or you could try removing the small watch battery from the motherboard for a while

 

[Bev]

Thanks ill try that .

 

[ExpandOnline]

A couple of solutions found by Googling "toshiba bios backdoor".

1 - It turns out that if the first five bytes of sector 1 (the second sector) of a floppy in drive a are "4B 45 59 00 00" then you can bypass the password (type enter when asked for the password and you will be asked to set the password again).

2 - Most Toshiba laptops and some desktop systems will bypass the BIOS password if the left shift key is held down during boot

3 - See also cgsecurity dot org for another idea.

Let me know how you get on.

Peter

 

[Bev]

Hi Peter

Neither of them work as this laptop as not got a floppy disk drive in any other suggestions ?

Thank for your help

Bev

 

[confused]

disconnect cmos batery. Not necessarily a button type on a lappy.

 

[ExpandOnline]

Hi Peter

Neither of them work as this laptop as not got a floppy disk drive in any other suggestions ?

Thank for your help

Bev

USB floppy drive?

 

[Bev]

Hi Confused

We have done that but soon as you put the main battery back in it comes back up with password.

 

[confused]

You did that already? Im refering to the cmos battery not the main battery. This usually involves dissasembling the laptop.

 

[stugster]

CMOS is probably the only way. The use of a floppy wont work as before the computer gets to POST to check for devices (if the bios checks for usb devices at all) the password is required.

what confused says about the cmos battery is probably the only way to get around this... and you will have to remember to dump the voltage of the capacitors as well!


P.S. it may work, chances are it wont, but apparently Toshiba have a backdoor password set: "Toshiba" without the quotes... Don't quote me on this, the internet told me so (and we all know how accurate the internet can sometimes be!)

P.P.S. The internet also says:
KeyDisk will reset the BIOS password on Toshiba laptops.

[BUT I HAVE NOT TESTED THIS, NOR HAVE I TESTED THAT LINK FOR VIRUSES!]

I accept no liability

 

[bg]

None of the solution will work when you have Power-on-Password. Newer models have embedded security chip. You have 2 options, 1, call Toshiba Technical support, they have to verify that you are the original owner then they might provide you with backdoor password.

2nd Option is to replace the motherboard or security/bios chip.

 

[confused]

but the M100's are old...

 

[stugster]

i was gonna say that, then couldn't be bothered to find the motherboard on google. it probably will not have an EPROM for the password.

 

[bg]

Like I mentioned earlier removing CMOS battery on this model is a complete waste of time. If toshiba cannot provide a backdoor pwd simply replace the motherboard.

 

[confused]

Cant say as I recall ever having had this problem with this laptop so cant say for sure. Sounds like you have had the problem so I have no reason to doubt what you say, its just you mentioned newer laptops have the lock and this isnt a new one

 

[stugster]

How does the password data get stored on this particular laptop then?

 

[bg]

There is a security chip embedded in the systemboard. Removing the CMOS/Backup battery will not erase the information stored in the chip. The information is not stored on the hard drive either.