Hi φαιδωνπαρασκευας,
I am Dave, I will help you with this.
Batteries in laptops use default Windows drivers, there is never a need to download a separate manufacturers driver.
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
Then right click and choose Enable
Close Device Manager
Restart you laptop, is the battery charging correctly?