Bios Software Thanks for the suggestion on the CMOS Battery. I've replaced the battery but I receive the same results -- Vaio VGN FS740/W does not boot. I have searched Sony's support page but I can not find where I can download update Bios software. Any suggestions? My cheers, Mik

Remove the battery, remove the power cord and start taking the laptop apart. You will need to remove the CMOS battery located on the motherboard and let it sit for an hour or two. Then but it all back together. The CMOS battery is a silver battery about the size of a nickel.

Hello,
Remove the CMOS battery ,wait for 30 secends and and again start.

To disassemble follow the bellow links.

http://www.insidemylaptop.com/disassemble-sony-vaio-vgn-bx-series-laptop/

http://www.laptopparts101.com/cmos-rtc-battery/

http://www.insidemylaptop.com/how-take-apart-sony-vaio-vgn-sz-series-laptop/

http://shopping.microbattery.com/s.nl/sc.2/category.763/.f?sendroicid=eb19116b-0e44-4ecf-b82d-e596f32a01ea&sendroikwd=notebook+cmos+battery&gclid=CN_DnuzolqYCFUUb6wodORuwLw

Hope it will help you.

Hello,
Please open you vaio laptop from bellow instruction link.
http://www.insidemylaptop.com/how-take-apart-sony-vaio-vgn-sz-series-laptop/

Follow step 14
You can manege the idea about CMOS battery.

http://www.insidemylaptop.com/disassemble-sony-vaio-vgn-bx-series-laptop/

Follow step 11

But this is your actual model
http://www.insidemylaptop.com/?s=PCG-K33+PC+Notebook
Just remove the Cmos battery And wit 2 minutes again fit the battery .Your password will be soon reset.

Hope it will help you.

To reset the BIOS read the information from this link.

In case of your Sony Vaio laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper.

Hi,

To reset the bios password on your laptop, you will need to remove the cmos battery on your laptop for some minutes and insert back, the cmos battery is located on the motherboard of your laptop, once the cmos battery is removed from the motherboard for some minutes, the bios password will be reset, and that fix the problem.

To reset the BIOS password read the information from this link.

In case of your laptop I would suggest using Kill CMOS software from Hiren's Boot CD to wipe the BIOS.

To reset the BIOS password read the information from this link.

In case of your Sony VAIO laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper and I wouldn't recommend doing it especially if it's under warranty.

I have set the password for administrator when i entered the bios set up. you can change its setting but not the configuration unless you've entered the password. you can't change the password with a new one if you cant enter the old password. Next time dont forget your password because laptops has its security even when stolen you cant open its bios set up if its protected by password. CMOS battery is in the mother board. You need a service technician to open your laptop to reset the bios setup battery.

you want to be looking for the rtc(real time clock) which is a little unit not much bigger than ur thumb nail.next to it youll find the battery(sometimes heat sealed with plastic.)if you remove this battery for about 5 mins then replace it or in ur case maybe renew it this will reset bios to factory(also method for bypass passwords as every thing is reset)
you might also wanna check ur video card.(connections and dust)