How to Connect two Monitors to same system

[Jeremy]

What you can do is take a look at your Laptop's manual if you have it, or go to your laptop manufacturer's website. Most laptops have a special function key or a combination of keys to turn off the laptop's screen while keeping the laptop running. If you can tell me the brand (Lenovo right?) of your laptop and the model (i.e. ThinkPad, IdeaPad etc. with the model number), I can help you find the answer.

Try Holding down the Fn (Function) key while pressing the F7 Key to turn off your laptop's display. To turn it back on, Hold down the Fn key while pressing the F7 key again. (You may have to do it twice to turn it back on.)

Or you can try Fn+F2 instead of Fn+F7. The Fn combination varies with different models so if neither of those combinations work, check your manual for the Fn combination keys.

Let me know if that works.