After 8 months of ownership, the PC started constantly rebooting itself and would not come out of that cycle.  I called Lenovo service (2.5 hour convo) on 12-14-2021 asking for a return label and box.  On 1-7-2022, that's right, nearly 1 month, the box arrived at my house.  I promptly sent it to Lenovo in Houston, TX for repair.  Lenovo claimed "corrupt software" created the issue but would not elaborate.  The only software was a Windows update from 10 to 11.  Computer was shipped out from Lenovo on 1-24-2022 and I got it in 3 days.PC worked for 10 days.  The rebooting problem came back and I was still on Windows 10.  Now,  I have the 2nd warranty  repair in less than 1 year and the CSR from Lenovo is trying to upsell me an "extended warranty."Keeping my fingers crossed for resolution or I will be contacting AMEX for a refund.  So sad too as my past experiences with Lenovo laptops (work, T-series) were flawless.