Toshiba C75D-B7100 BIOS Password reset

[PCLAB]

Hi

As the topic says, I need to clean the BIOS password on this Toshiba.
The usual removal of CMOS battery doesn't work.
I had another Toshiba a couple of weeks ago, that needed to short 2 points and this one should be the same.
The problem is that I can't find those points.
Does anyone knows which ones are they?

Thank You

 

[sapphirescales]

In Toshiba's they're normally under the sticker beneath the RAM slots.

 

[PCLAB]

It's not there on this model....

 

[Computer Bloke]

Can you remove the cover for the RAM cards, uninstall the RAM, remove any stickers, and then post a high-resolution photo of the entire area?

The link you need moves around a bit between motherboard versions but it's usually easy to spot once you know what you're looking for.

 

[PCLAB]

Gere is a photo.
I have tried to short the points marked, but nothing...

 

[mr m]

Those pins you highlighted looked promising.

Take a pic of the CMOS battery area. The reset jumpers are located next to the battery on some Toshiba's and others.

 

[PCLAB]

I have shorted them both (soldered a wire) and no go.
I will post a photo of the CMOS later.
Thanks

 

[PCLAB]

Here it is.

 

[nlinecomputers]

This might have a few ideas: https://www.raymond.cc/blog/how-to-reset-remove-clear-or-reveal-cmos-bios-security-password/

 

[Computer Bloke]

I'd really like to see what's under the paper label inside the RAM socket.

 

[PCLAB]

I'd really like to see what's under the paper label inside the RAM socket.

That is also possible ...
Tomorrow I will upload the photo.

 

[HCHTech]

I'd really like to see what's under the paper label inside the RAM socket.

Yes. It's probably super-glued to the motherboard....which increases the odds that there is something important under there. Based on your photo, though, I sure would have guessed the pads you highlighted were the right ones.

 

[HFultzjr]

Disclaimer - I have not used this, please use at your own risk.

I have this tucked away in case I ever need to try it, if you can boot far enough to try it.

Invalidating the CMOS Checksum Manually
If you prefer to do it manually rather than relying on automated programs or the other tools like CMOS De-Animator aren’t working, it is possible to reset the BIOS password by using the debug.exe tool which will invalidate the CMOS checksum in a similar way to CMOS De-Animator. This can be achieved by typing two commands into the debug tool if you first boot up the computer in FreeDOS. Here are the instructions.

1. Install FreeDOS on a USB flash drive using Rufus or UNetbootin.

2. Download the debug.exe tool and save it to the root of your USB flash drive.

3. Boot up the computer with your USB flash drive and type the following commands: (take note that the second and third commands start with the letter O and not the number zero.)

debug
o 70 2E
o 71 FF
quit

4. Restart your computer with Ctrl + Alt + Del and you should encounter an error message like “CMOS checksum error” which is normal. You can now access the CMOS setup without entering a password

 

[PCLAB]

Nothing there....

 

[HCHTech]

Barring one of the tools mentioned in @nlinecomputers post or the procedure from @HFultzjr above....

Calling it in 5.....4.....3.....2.....

 

[GTP]

These are the points to short with a flat screwdriver for 10 seconds.
I think its the top one but try both.

 

[PCLAB]

Didn't worked....