Tip & How-To about Toshiba Satellite A135-S4527 Notebook

BIOS Password removal

Removing the lithium battery in the motherboard may not do the trick to reset the password. To reset the password, check out this website:


Posted by on

Toshiba Satellite A135-S4527 Notebook Logo

Related Questions:

1 Answer

I do not have the password to unlock BIOS

Every motherboard manufacturer and model has different way to reset the BIOS with jumpers in certain positions.However, this trick will work on all motherboards.Remove the round lithium battery that is located somewhere on your motherboard and wait for 5 mins. Make sure the power cable is not plugged to the power supply.After 5 mins replace the battery and you will have successfully resetted the BIOS and cleared the CMOS

Nov 17, 2011 | Computers & Internet

2 Answers

I'm having trouble removing a bios password from my latitude d631. I tried removing the battery for a few hours, and dozens of default master passwords. Nothing's worked and this is alot of trouble just to enable usb booting.

there are a few options, if there is no small battery on the motherboard you can either replace the eprom chip or do a paperclip trick. on ebay there are password removal sellers for around $20
sometimes they can help , but it sounds like its locked in you eprom the paperclip trick involves removing the motherboard and powering on the laptop while jumping the pins on the eprom chip with a paperclip.

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

Feb 07, 2011 | Dell Computers & Internet

2 Answers


Dear Sir,

To remove password in your BIOS

1. Turn off your PC ang remove power cable
2. Open your PC Casing and find the CMOS battery
3. Remove CMOS Battery Located in your Motherboard
4. Most Bios Battery is CR2032 Lithium Battery
5. After removing battery Short circuit the Positive (+) and Negative (-) pin in your bios terminals using a metallic screw or any metal to connect both terminal.
6. Put back the CMOS battery to its original location.
7. Turn on your pc and press F2 or delete depending on your Motherboard BIOS key.
8. Check if you can enter the BIOS settings.

Hope this will help,

Feb 04, 2011 | MPC Computers TransPort X1000 Notebook

3 Answers

bios password reset

Turn the laptop upside down and start removing the plates one by one till you find a button cell about 3/4 inches in diameter. Remove this cell for a minute or so and reinsert after that. Your BIOS password would be reset to nothing. And in future please do not use any passwords as we all tend to forget them sooner or later.

Jan 01, 2011 | HP Compaq Business Notebook 2230s

1 Answer

need a free power on password repair for toshiba satellite 1400. when unit boots system asks for a password where none was? need to clear the password portion in the bios

Because the BIOS is stored in ROM, it must have a constant power supply to store any changes you make to it, otherwise it would reset every time you disconnected your laptop from AC power. Removing power to the BIOS resets it to factory settings and involves disconnecting a small battery attached to the motherboard. On many laptops, the BIOS battery is easily accessible through a door on the bottom of the unit. Unplug the computer, remove the main battery and touch something metal to ground yourself. Remove any screws holding the BIOS battery door in place. Then identify the battery, (it is generally a small lithium "watch" battery), and remove it taking care not to damage any surrounding circuitry. Let the computer rest for a twenty minutes or so discharge any remaining power, and replace the battery If your laptop does not have an easily accessible door for the BIOS battery, you may have to dive deeper and disassemble the computer to find it. Consult your laptop manufacturer's website for information on replacing or removing the BIOS battery from your model.

Sep 05, 2010 | Toshiba Satellite 1400-S151 Notebook

Not finding what you are looking for?

3,426 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Toshiba Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18429 Answers

Alun Cox

Level 3 Expert

2679 Answers


Level 3 Expert

8081 Answers

Are you a Toshiba Computer and Internet Expert? Answer questions, earn points and help others

Answer questions