No. This Lenovo IdeaPad 3 15 Gaming Laptop, model number 82K1015EUS, ships with the Intel AX201 NV WiFi-6 Chip installed for wide range/high speed 2x2 802.11ax frequency WiFi capability, which is also backward compatible to older a/b/g/n/ac frequency WiFi frequencies as well.

The Intel Evo-Certified, Lenovo Yoga 7i 16, model number 82QG0000US, is an lighter, Arctic Grey case color while the Intel Evo-Certified, Lenovo Yoga 7 16, model number 82QG0012US, is a darker, Storm Gray case color.

No. This Lenovo Yoga 7 14 Model Number 82QE001NUS, is compatible with an AES Protocol Active/Digital Pen, which is sold separately, like this one: https://www.bestbuy.com/site/wacom-bamboo-ink-smart-stylus-for-windows-ink-2nd-generation-gray/6374981.p?skuId=6374981

That will depend on the nature of the problem causing the system shutdown. Once you have setup your new PC, and before you start truly using the PC for what you purchased it for, create recovery media. This may allow you to restart your computer and repair issues that are software-based. Here is a link to instructions for creating a recovery media drive: https://support.microsoft.com/en-us/windows/create-a-recovery-drive-abb4691b-5324-6d4a-8766-73fab304c246. If your PC stops working and you do not have recovery media available, you can use another computer to go online to: https://pcsupport.lenovo.com/. Here you can select your specific computer model by inputting its serial number. You can select diagnostics and see a list of troubleshooting tips for your specific problem. You can also call Lenovo Legion Ultimate Support about issues with your Lenovo Legion Tower 5 at: 888-278-9707. Finally, you can contact your local Best Buy Store and make an appointment with the Geek Squad and have a Geek Squad Agent assess your computer's problem and provide an estimate of the cost to repair. Check with the Geek Squad Agent on the phone about the cost to evaluate your computer's problem before repairs are made as well.