I know very well the Elitebook 840 G3 because I use one for my daily job. That's why I bought the same for me as personal laptop. However when I started it for the first time, windows started doing updates. Normal procedure.After a couple of updates/restarts, the laptop died and won't boot anymore. It had just backlit blinking. I'm a tech person so I have tried a couple of things to get factory reset. No success. That's why I returned it. But the seller is very good, and I gave him 4 stars.