Remove battery and charger, press and hold power button for 1 min, this should reset cmos settings and put the motherboard back to factory settings. If that doesnt work, remove battery, plug charger in, boot up and get in device manager.
How to get into device manager
Right click on "my computer" and click "manage" >>>>>> window will open and on the left one of the options is device manager, click it.
In device manager, under battery, expand this by clicking the triangle, now right click on "Microsoft ACPI-Compliant Control Method Battery" and select uninstall. Now on the top should be your computers name, right click and "scan for hardware changes", this will reinstall acpi compliant battery control....
Now reboot, plug battery in only, if it boots up on battery use it until battery is completely dead, if windows hibernates to save battery, shut down, then restart, boot into bios and leave on the bios screen until the battery dies. Now plug in the cable of the charger if the charging light comes on let it charge for 5 hours +, before using the laptop again.