I am unable to find lan driver for the acer notebook aspire 4715

Connect to internet using ethernet cable and update wifi driver from makers site, if this does not work then buy a usb wifi adapter off ebay or from a local store, put it into usb port and install the driver from the disc supplied with the adapter and off you go (far cheaper than replacing the wifi card)

Connect an another computer to your broadband model and if it can connect to the Internet, if not then it could be a LAN cable problem or a LAN driver problem.
The LAN cable maybe faulty, try a different cable.
Try reinstalling the LAN card driver.

You need to install LAN driver

http://support.acer.com/us/en/product/family.aspx

hi

Instructions
1. Step 1 Navigate to Acer's support and driver download website at support.acer.com/drivers_download.aspx.
   
2. Step 2 Choose "notebook" from the "Product family" list.
   
3. Step 3 Select your product line (Aspire, Travelmate, etc.).
   
4. Step 4 Select your model number to identify the exact machine you own.
   
5. Step 5 Scroll down the "Wireless LAN" entry, under the "Driver" tab.
   
6. Step 6 Click the yellow "Download" button located to the left of the "Wireless LAN" entry.
   
7. Step 7 Open the installation file once the driver has finished downloading.
   
8. Step 8 Follow the on-screen directions to install the wireless driver.
   
9. Step 9 Restart your computer when prompted to do so by the driver installer. This will finalize the installation process.
   
10. Step 10 Attempt to connect to a wireless network.
    

hi

find drivers for
http://support.acer-euro.com/drivers/notebook/as_3690.html

I hope you have Win XPor Vista , cuz you didn't mention the OS.
For XP : Drivers
For Vista : Drivers

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Regards,
Waqar

The Aspire 4715 comes with Wireless OPTIONAL. Your system obviously wasn't bought with a pre-installed wirelss card. If you want to go wireless, you will need to buy a wireless card/adaptor seperately.

this is where you should be able to find your driver http://www.logitech.com/index.cfm/support_downloads/downloads/

http://support.acer-euro.com/drivers/notebook/as_3680.html

download or 5570 drivers support this model