Firstly you need to check what operating system you have. If your laptop is running Windows 7 Starter Edition, then you will not be able to change your background. You will have to upgrade to a version like Windows 7 Home Premium for the customisation facilities (like changing the background) offered on Windows 7. You can find out what version of Windows you are running by bringing up the start menu and right clicking on "Computer" then choosing "Properties". Your edition of Windows will then be listed at the top of the screen.
Acer are known for installing Windows 7 Starter on their cheaper laptops to save costs, however the starter edition has many limitations for end users. You can see an in depth comparison between the starter edition and the other editions of windows here:
answers.microsoft.com/en-us/windows/forum/windows_7-windows_
To get the most from your PC, you should consider upgrading to Windows 7 Home premium, which is designed for the average home user. It offers all the standard functionality that you'd expect from a PC. You can buy a "Windows 7 Anytime Upgrade", which allows you to quickly and easily upgrade your edition of Windows 7. To upgrade from Windows 7 Starter to Home Premium costs just £44, available from Amazon (and many other computer retailers too), www.amazon.co.uk/Microsoft-Windows-Anytime-Upgrade-Starter/d
When you have a version of Windows which allows customisation, you can simply change the background though the control panel. Open up control panel by clicking Start, and then select Control Panel. The under the "Appearance and Personalization" heading, chose "Change desktop background". From there, you can select any picture you may have on your computer and set that as your background.
Acer are known for installing Windows 7 Starter on their cheaper laptops to save costs, however the starter edition has many limitations for end users. You can see an in depth comparison between the starter edition and the other editions of windows here:
answers.microsoft.com/en-us/windows/forum/windows_7-windows_
To get the most from your PC, you should consider upgrading to Windows 7 Home premium, which is designed for the average home user. It offers all the standard functionality that you'd expect from a PC. You can buy a "Windows 7 Anytime Upgrade", which allows you to quickly and easily upgrade your edition of Windows 7. To upgrade from Windows 7 Starter to Home Premium costs just £44, available from Amazon (and many other computer retailers too), www.amazon.co.uk/Microsoft-Windows-Anytime-Upgrade-Starter/d
When you have a version of Windows which allows customisation, you can simply change the background though the control panel. Open up control panel by clicking Start, and then select Control Panel. The under the "Appearance and Personalization" heading, chose "Change desktop background". From there, you can select any picture you may have on your computer and set that as your background.