This laptop worked fine for about 12 months, now it's crashing frequently. It's likely a hardware problem as the screen shows a brief flash of pixelated artifacts right before it crashes to a black screen. As per Lenovo's instructions, Windows 10 has been completely reinstalled. I even paid for the premium Lenovo warranty and it has been sent to Texas for repairs twice and still has the same problem. Lenovo didn't fix the laptop and now they keep closing my service tickets with no explanation. Do not buy Lenovo, they sell low quality computers and then futher scam their customers with false warranty products.