Hi friends iam using lenova z560.First it’s work very fastly n effectively but now it’s not working effectively. Body of laptop very weak plastic .so my friends brought Dell laptop now it’s work very good condition but my laptop was gone.s o better to choose the laptop hard series to servy more days n years donot select z series especially students.so better not buy Lenovo z series it’s very delicate better to hard one .iam having bad experience with Lenovo not only Lenovo laptop with Lenovo mobiles.