I bought this PC only two years ago, and it's already broken. It freezes when waking up after sleep. It often hangs or restarts itself. It's a piece of junk.Update information:I've been using the PC without using the sleep mode, and has been working OK. However, today, it completely died. It boots, then the screen flashes and I get a black screen. I changed the SSD, but I get a black screen too. This PC completely died 3 years after the purchase. DON'T BUY LENOVO PRODUCTS.