I have aspire 4720z where i can download network drivers

Acer Aspire 4720z has Broadcom wireless adaptor
I faced the same issue and contacted the Acer Support and download driver for Acer Aspire 7220 and 7520G, which have the same wireless wireless adaptor. IT WORKED!
So, checkout the following two links and download the drivers

http://driverscollection.com/?file_cid=424454836411ddb8213cf253fc4
http://driverscollection.com/?file_cid=424277094452496e1ed2cde4568

Good Luck!
CreativeTECH

Acer Aspire 4720z has Broadcom wireless adaptor
I faced the same issue and contacted the Acer Support and download driver for Acer Aspire 7220 and 7520G, which have the same wireless wireless adaptor. IT WORKED!
So, checkout the following two links and download the drivers

http://driverscollection.com/?file_cid=424454836411ddb8213cf253fc4
http://driverscollection.com/?file_cid=424277094452496e1ed2cde4568

Good Luck!

CreativeTECH

Try reloading your drivers first starting with the touchpad then the audio drivers here is the link

http://support.acer-euro.com/drivers/notebook/tm_4720.html

Hi,

Go to following link and download your driver.
Just select your notebook model and download drivers.

and if you are using windows xp with service pack 2 or higher or any windows vista operating system then you dont have to install USB drivers.

Acer Aspire 4720Z

DON'T FORGET TO RATE !!!

Thanks

http://www.ngedownload.com/all-drivers-chipset-vga-audio-card-readr-webcam-modem-acer-aspire-4720z-windows-xp.htm
check in bnottom there are drivers zip files .
download proeper driver for yhour wlan.

Try here http://www.driversupdated.com/exact/acer.php

Hi There, since Acer do no release a wlan driver for Windows XP, you need to use the driver for Window Vista. If you do not have the driver for Windows Vista, you download it from here . After finish downloading, then un-zip the file. Now let's start to install the wlan drivers. Go to your "Start Menu", then "Settings", "Control Panel" then "System", system properties windows will be pop up. Then select "Hardware" tab, and then click on "Device Manager" button. You will then see "Device Manager" windows. Look for your "Network Adapter" and you will see your wlan network adapter with red cross mark.Right click your red crossed wlan adapter, then select "Update Driver"
You will prompted with "Hardware Update Wizard" then select on "No, not this time" radio button and click on "Next" button. On next windows, select "Install from a list or specific location (Advanced)" radio button and then select "Next" buttons.
Then another window will pop up, then select "Don't search, I will choose the driver to install", then click on "Next" button. Then you will come to this windows "Select Network Adapter", you will see you existing network adapter that do not working, then select "Have Disk", and browse to the location where you have unzip the driver. Then Select the appropriate driver for your laptop. Acer Aspire laptop 4720z come in 3 wlan varian, Intel chipset, broadcom, and Atheros and I don't know which one is on your laptop. Just try one by one if you are not sure, it's only 3 to choose from.
Hope my solution could help you out.

do you know what's not working on your laptop (like sound,wireless,network,bluetooth,etc) ? it's the problem with driver.

Download all your 4720 drivers from here :

http://support.acer-euro.com/drivers/notebook/as_4720.html

Have you gone to the acer site? and second question I too have an acer and I got rid of Vista is this what you did or did the computer come installed with xp. If it did make sure you have the Microsoft hdd coded driver installed. It is available by googling "hdd audio driver" it will send you to microsoft to download. Also make sure you have completely deleted the previous software before loading the new one they will conflict and load on top of each other. Hope this helped..Take care.. Be mucho blessed..Mark

it sounds like your haveing conflicts did you try to see if in your systems tools if it conflicts let me no linda