Hi, You just need to download the appropriate audio driver for your motherboard. Go to the Device Manager and install all missing drivers for 'Unknown Devices'.

Either connect to the internet or use the driver disc which came with your laptop. For those who doesn't know how to access Device Manager, please follow the steps below. For Windows XP: Start -> Run -> Type devmgmt.msc (in the box) -> Right click Unknown device -> Properties -> Driver tab -> Update driver For Windows Vista and Windows 7 Start -> Type devmgmt.msc (in the start search box) -> Right click Unknown device -> Properties -> Driver tab -> Update driver Hope this helps. Answered on Aug 29, 2011. Go to this website: it does not allow me to take you straight to the driver but from there you can select your model, OS and it gives you all the drivers for XP anyway (select notebook not netbook) notebook > Travelmate > TravelMate 4020 >scroll down and there is 2 based on your card click on the orange button > save driver to desktop > install after it finishes. If it works for you don't forget to rate me thx Answered on May 21, 2010. You will need to identify each device in the laptop that does not have a built in driver for Windows 7 (eg wireless card, ethernet, display, etc) and download a compatible driver from the device manufacturer (like intel or ati).

Acer TravelMate 4020 Drivers Download This page contains the list of device drivers for Acer TravelMate 4020. To download the proper driver, first choose your operating system, then find your device name and click the download button.

Try running the Upgrade Advisor from the Windows 7 disk before upgrading to make sure everything will work out ok. Let me know if you can't find a particular device driver. There is a program called DriverMax that can sometimes get drivers for your computer automatically after you install Windows if you have internet access. Good Luck! Answered on Feb 05, 2010. Codesoft receipt printer driver.