Need to get past the bios password on my thinkpad T40. What can I do?

Write it down all the bios settings. and remove laptop keyboard by removing screws back side of the laptop (small embosed picture indication remove those screws) and just lift the keyboard and search for cmos battery, see below picture , just unplug the battery and keep unpluged for minuite or two. and connect the battery. fit all the opened cover and restart . best of luck

Hi,follow these carefully.but you'll have to open the system up,if you have no prior I.T expertise I'd suggest you take to a qualified Technician,but if you do here is how:First remove the Battery,then uncouple the system taking care to remember where each of the screws go to then locate the CMOS battery(small battery Lithium Ion mostly in the shape of a cent or smaller),it may be underneath the keyboard or just behind the outer back casing,once the external cover is open.unplug it from the system for about an hour or two reconnect it,couple the system and boot,go to Bios,reset Date and Time and save,then exit.