There is a fair chance that the Windows 8 drivers may work on Windows 7, but it will be trial and error, I'm afraid. Using a program like Belarc Advisor will help you identify the parts inside your laptop. You can then go to the manufacturers web site (E.G., Realtek, Intel etc) & download drives from there.
Please join me in congratulating IronFly who is the first Acer Community Member to achieve the rank of ACE Pathfinder. IronFly has shown a consistent willingness to help others and has worked hard to earn this new Rank. Congrats and Thank You IronFly.