When you upgrade to a newer operating system, you need to download new drivers that are made for that operating system, in your case, Windows 7. Please use the support page and download all the drivers that all are available for your operating system. Make sure you choose between 32 and 64bit because sometimes these differ a lot.
Please use the following path to reach downloads for your product: Notebook,Ultrabook > Aspire > Aspire 6930 > Windows 7.
