You can try downloading the drivers from the Acer web site
http/us.acer.com/ac/en/US/content/drivers
Please make sure you pick Windows 7 32-bit or 64-bit per your machine.
The fact that 4 have issues, leads me to think it might be a problem with the Southbridge (hardware) or maybe the Driver labeled Chipset Intel Chipset Driver
Just be aware the Southbridge controls all 4 of the devices you are having problems with.
Any chance it is still on warranty, call support do what they ask and see you can RMA it? Back up your data, because it will be wiped clean when you get it back and you will have to reload all your applications.
If you want to see, what I am talking about here is a nice diagram:
http
/en.wikipedia.org/wiki/Northbridge_(computing)