Recently I re-installed Windows 7 on my friend's DELL Inspiron M5040 laptop. However, now it cannot connect to the wireless network.

I checked the Device Manager in the Control Panel and I see that both the Ethernet and Network Controllers are currently not recognized by the system. 

I downloaded the following driver from DELL's website -- 
http://www.dell.com/support/drivers/us/en/19/DriverDetails/DriverFileFormats/Product/inspiron-15-amd-m5040?DriverId=F042R&FileId=2957461631&urlProductCode=False

-- however, it doesn't seem to work either.

I would appreciate it very much if someone could let me know how I could download the drivers so that I can connect to the WiFi network.

Looking forward to getting some helpful pointers from the DELL community.

Best regards,
y0ht0nka