It is my fourth ThinkPad computer. I am writing this review on the oldest one that is seven years old and still working perfectly. My second one is dead after five years of business -- I will replace his hard drive and present to my mom (75 yo), she will love it. My husband is working on   third one that is 4 yo.  And our new addition is lighter, faster and has new generation hard drive that is not prone to failure. Hooray! Happy me!  Love Lenovo Thinkpads - great working horses for all our family. Did I tell you about my son? He is too Thinkpad owner.