Super Google Chromebook Pixel 2013 (4G LTE) Touch Screen 12.85" 2560x1700 3:2 LCD i5-3427U 4GB DDR3 64GB SSD 3.4lbs Ultraportable Bluetooth 3.0 , Webcam, and Dual Band WiFi Built in. Connect your Chromebook (if it have HDMI port) to a TV via HDMI and double check sound works there. Then make sure that speakers output is Chromebook Weighs only 3.4 lbs. and measures just 0.6" thin.Check if there is a weird Chrome extension installed and perform a test by using Guest mode and see if it works or do a Chrome Browser Reset Built In Verizon 4G LTE with 100mb included each month.If you suspect that there is a hardware issue do a EC Reset (Hard Reset) Dual Core 1.8Ghz Intel i5 Processor and 4GB DDR3 RAM.Maybe there is an issue on the user profile, that can be fixed with a Powerwash Reset (Before you reset, make sure to back up your files on Google Drive or an external hard drive. The factory reset won't delete any of your files on Google Drive or external hard drive.) 3:2 Photographic Format Display Designed for Web and Multitouch Capabilities