To change the brightness on your Lenovo laptop, first press the Windows logo key and the space bar at the same time. This will bring up the search menu. Type in "Power" and click on the "Change what the power buttons do" option. Click on "Change settings that are currently unavailable".
To increase the brightness of your screen, go to the "Control Panel" and then click on "Power Options". Click on "Change when to turn off the display" and then move the slider to the right for a brighter display.

how to fix brightness on lenovo laptop?

Next, check your pilot light. If your pilot light is on, but you still get the e1 error, it’s possible that your thermocouple is bad. Although you can replace the thermocouple yourself, we recommend calling a plumber to do the job for you.

how to fix e1 error on ecotemp water heater?