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Quick Fix for Lenovo Yoga C940-15IRH Screen Not Working

Posted on April 24, 2022April 24, 2022 By Gustav Eriksson

It sucks when you buy a laptop and only after a few short years it starts having problems. The Lenovo Yoga C940 is a mid-range consumer-grade 2-in-1 laptop. It’s meant to be versatile in its ability to meet widely different demands, such as business, engineering, and gaming. It’s an all-around good device. But, like all laptop manufacturers on the market today, they have their problems too.

One of the most widely reported problems on the Yoga C940-15IRH is the screen not working. The backlight on the keyboard turns on and you can hear the fans running, but the screen is not working. For those that are fortunate, this may just be a CMOS-level settings issue. This article will discuss how to quickly fix this issue for Lenovo Yoga C940 series laptops with screen issues.

Before conducting any of these steps, make sure to read our disclaimer.

The first step in troubleshooting is to check if your laptop is currently under warranty. You can do this by finding the serial number on the laptop and heading over to Lenovo’s warranty page to type it in.

If you find that your laptop is not under warranty, and you’re the type that likes to get their hands dirty, then by all means proceed. But beware, for a beginner this could take over an hour. For the experienced, less than 15 minutes.

Essentially, you will have to open up the laptop casing, remove the battery from the laptop and hold the power button for over 30 seconds. What this does is resets the CMOS settings.

Here are the steps for “Quick Fix for Lenovo Yoga C940-15IRH Screen Not Working”:

Step 1: Remove all the screws from the back of the laptop. These screws are T5 screws. So, really small screws that require a small Phillips screwdriver.

Image Credit: Lenovo

Step 2: Use a pry tool to lift the laptop casing apart. If you don’t have a pry tool, there’s a nice cheap kit on Amazon you can buy that includes a pry tool.

Step 3: Next, you are going to remove the battery cables from the system board, illustrated below. Do not pull on the cables. You might have to use a small flathead to wiggle the connectors apart.

Step 4: Hold the power button down for 30-60 seconds.

Step 5: Reconnect the cables, put the casing back together and power it back on.

If that does not work, then there is an underlying issue. Another primary issue with laptop screen issues is the flexing of the cable that connects the display to the system board. That issue is out of the scope of this article and may be addressed in a future article. I hope you were one of the fortunate Lenovo Yoga C940-15IRH owners who found this fix to be a working solution.

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How To, PC Hardware Tags:laptop repair, troubleshooting

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