I could really use some help. I bought this laptop about 1 year ago and I don't think I had a problem the first 2 months. Now it seems the keyboard and the mouse are really slow and I've been living with it. I'm going to use it more often in a few months and need it to work correctly. I've read online about this machine having some lag issues with other users but no solved solutions. My 12 yr old desktop works better than this thing. It is 2012 or 2013? Lenovo T420 300 GB (72GB being used) hard drive, 8 GB ram(.25GB being used) , I upgraded from 4. Core i5, 2.5GHZ, 64 bit, running windows 10 but he sticker says it came with 7. I have tried all the online stuff like closing start up programs, clear history, new mouse, virus scans, malware scans, add RAM, checked to see if I have the correct power source, last week i reset BIOS defaults? etc Here is what happens: I click in the search box and start typing only half my word shows up. ie I want to search for storage, it shows up as orage. Excel doc on my desktop takes 30 seconds to open. It has 50 email address on 1 page. 10 page PDF highlights but doesn't open, i have to double click again. I move my curser to close a document and it take 3 or 4 seconds before the red X highlights and will let me close the document or web site. I double click and word doc and it just highlights but won't open. Basically a lot of problems with clicking and typing. I do not know how to decipher the info in task manager? If anyone is familiar with this machine and can walk me through some steps to check out? I would certainly appreciate it. You may have to tell me how to do what I need to do.