In this video I show the simple way to replace the bios battery. In this video I use a dremel tool to cut a new access in the bottom of my computer. I had determined from disassembling a similar model laptop computer that the bios battery is the most impossible place to reach and that disassembling all the zillions of tiny little screws, ribbon cables, pop out keyboard, and tiny little plugs is probably about just as risky of a procedure as just cutting a hole in the bottom of the computer. when doing this, care much be take not to cut the internal wires or circuit board since that will definitely ruin the computer. Also there is no guarantee that the bios battery will be in this same location on other models of computers, so don't try this on any different models of manufactures unless you know exactly where the battery is. If fact use this as a last resort. It is very risky that you will permanently damage your laptop.