If you just need to take a simple screenshot on your Lenovo laptop, you can use the Windows screenshot feature to do so.
1. Take a screenshot of the whole screen

- Press the PrtSc key to take a screenshot of the whole screen

- Press the Windows logo key and the PrtSc key to take a screenshot of the whole screen

This screenshot will be copied to your clipboard and be automatically saved in the path C:\Users\[Your Name]\Pictures\Screenshots

2. Take a screenshot of an active window

To take a screenshot of an active window (the window currently in use) on your Lenovo laptop:

- press Alt + PrtSc

- Open Paint

- On your keyboard, press Ctrl and V at the same time to paste the screenshot into the Paint program.

- Save the screenshot.

3. Take a custom screenshot

Press the Windows logo key + Shift + S

Choose the snipping tool you’d like to use:

-Rectangular: take a screenshot in a rectangular shape.
-Freeform: take a screenshot in any shape you like.
-Fullscreen: take a screenshot of your entire screen

- See more:
How To Fix Lenovo Keyboard Not Working Windows 10: https://youtu.be/gww41SDmqKI
How to take screenshot on Laptop Lenovo Yoga: https://youtu.be/iU1JX2JrpJU
How To Take Screenshots on Lenovo IdeaPad Slim 5: https://youtu.be/HWuw0S1onnI