The Lenovo IdeaPad 3 15 Laptop, model number 81WE00NKUS, ships with Windows 10 S-Mode Operating System. Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost. This configuration ships with the 4-Core/8-Thread, 10th Generation Intel Core i5-1035G1 processor. This laptop uses integrated graphics processing within the Intel Core i5-1035G1 processor. It is the integrated Intel UHD Graphics version. We recommend you check with the specific game's software publisher's web site for their compatibility with Windows 10 S-Mode 64-bit operating system and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration.

It is free to switch from Windows 10 S-Mode 64-bit Operating System to Windows 10 Home 64-bit Operating System. Here is a link to instructions for switching from Windows 10 S-Mode to Windows 10 Home: https://support.microsoft.com/en-us/help/4456067/windows-10-switch-out-of-s-mode

Yes. You can use a compatible Windows 10 mouse. There is a built in touchpad within this device that functions as a mouse would.

The Lenovo IdeaPad 3 15 Laptop, model number 81WE011UUS, does not have a touchscreen.