Press the keyboard backlight key that decreases the brightness. This key usually has three horizontal lines under three radiating lines. [1] X Research source You might need to press Alt + Brightness Down if your Chromebook doesn’t have dedicated keyboard backlight keys. You can always turn the backlight back on if needed.

Press the screen brightness decrease key. This key may look like a star or multiple lines radiating out of a central point.

Press Shift + Esc to open the Task Manager. Click the headers to sort by the selected category. You can stop a task by selecting it in the list and clicking End process. Only end a task if you know what it is. Stopping certain chromeOS tasks could cause your Chromebook to stop functioning correctly.

Click the More button in the top right of Google Chrome. It looks like three circles stacked vertically. Navigate to More tools and then Extensions. Click the on/off toggle button in the bottom right of an extension to deactivate it. Turning it off will stop the extension from running while you use Google Chrome.

If there’s a critical update to chromeOS (such as an important bug fix or security update), you may want to install it as soon as possible.

Press Search + L or Launcher + L to lock your screen. [4] X Research source

Click the time in the bottom right and select {“smallUrl”:“https://www. wikihow. com/images/5/5d/Windowspower. png”,“bigUrl”:"/images/thumb/5/5d/Windowspower. png/30px-Windowspower. png",“smallWidth”:460,“smallHeight”:460,“bigWidth”:30,“bigHeight”:30,“licensing”:"<div class="mw-parser-output">

I edited this screenshot of a Windows icon. \n</p>

License: <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="http://en. wikipedia. org/wiki/Public_domain">Public Domain</a>
\n</p></div>"}. Click the time in the bottom right and select Sign out, then Shut down. Press and hold the physical power button for 3 seconds. Press and hold the physical power button to open the shutdown menu.

Try cleaning your laptop thoroughly and dusting the internal components to keep the temperature down. Make sure to power down your computer before cleaning it.