I have a hp laptop model 6735s. I have forgotten my bios password. I have tried removing the rtc battery but still can not get into bios. Any other ideas please?

Toshiba has a known problem with there A series model of laptop. It has been known to set its bios password by itself. It is a simple fix, but should be done by a professional or a confident user.

If you want, this is what needs to be done. Remove the piece of plastic above the keyboard. Unscrew the 2 screws in the keyboard and lift the keyboard up( No reason to disconnect it ) Unscrew and remove the modem card in the center. There is 2 solder points c88 on the system board. You need to short those 2 points out while you press the power button on. This will reset the bios password. This should take someone about 5 minutes to do.

For instructions on how to remove the keyboard

How to Remove a Toshiba Equium Keyboard | eHow.com

hope this helps

the above is too much of a mess around just google search bios master passwords and use the one for your bios