New
#21
Acer forgot to place the chipset drivers for Aspire 4520 in Windows 7 x64, but you can use the one in Aspire 5520 that is the same exact notebook, but 15" version.
Acer Support - Welcome to Acer Support
Seems like Acer likes to be tricky, huh?
Hope it helps you. :)
PS: Direct link for lazy people like me.
http://global-download.acer.com/GDFi...C=Acer&SC=PA_7