1
Open Device Manager (accessible by right clicking your Start Button)
Expand the Batteries section
For each device in that section:
Right click and choose Disable
Wait a second or two, then right click and choose Enable
Close Device Manager
Restart (not shut down) your laptop to apply the change and check the battery usage.
2
What are you doing on your laptop when the battery is draining so fast, are you gaming on the laptop or performing GPU or CPU intensive tasks.
3
I need to check your BIOS version, click your Start Button, then just type msinfo and press Enter, please provide a screenshot of the resulting System Information window.