Purchased this new in May, 2020. A few weeks later, it began to put itself to sleep and refuse to awaken. At first, it would come back on in an hour or so, so the only way to use the machine was to leave it plugged in and turned on all the time. About a week ago, it once again fell asleep when the lid was accidentally closed and did not awaken. After researching online and speaking with several computer techs, I discovered that their are thousands of similar problems being reported with this model. I have used Lenova computers before and found them to be a good problem but this situation has made it so that I likely will not purchase a Lenova in the future.To be fair, Lenova did offer to repair it, but I instead chose to accept a full refund from Amazon because of my need to have a reliable machine for my work and my extreme dissatisfaction with this model of the Lenova Ideapad3.