Press and hold the power button and the resetkey at the same time for 20 seconds. It may take more than one attempt. Try this with the device unplugged and, if that does not work, with it plugged in. Be sure the two parts of the charger are securely connected.
For 11" Chromebooks and Gray 14" Chromebooks, the reset/refresh button is along the top row of keys, closer to the left side, and the power button is at the top, right of the keyboard:
For 14" Chromebooks: the power button is along the left side of the device:
Andthe reset/refresh button is along the top row of keys, closer to the left side:
IF DEVICE WILL NOT CONNECT TO WiFi:
Click on the time in the bottom right hand of the screen - click on the wifi symbol. Next, click on the blue button on the right to turn off the wifi. Click the blue-button again to turn the wifi back on.
Restart your device by clicking the power button, then selecting the power icon
Check your wifi router and your internet modem. If either are not working, contact your internet provider.