just reset the settings in wireless adaptor . and make sure you update the wireless driver after reset and see if any other program is not blocking the internet connection . check the wireless adaptor settings for any other help before you try reset the computer just visit acer for latest driver and manual click [https://goo.gl/Y1qe5B|http://www.acer.com/ac/en/US/content/support] and let me know if you need any other help