Hi Friends!
I am also using Lenovo G580 since 2012. I would like to share my experience with it.
My hard drive totally crashed after 7 days of purchase.
Every year my hard drive would have this problem so every year I have to replace it, so be careful to backup always for safety.
I like G580s working speed and the quality of sound.
I like Lenovo brand but I don’t like the service quality because of its slow process.
Startup as well as shutdown work very quickly without error.
Specially, Lenovo is such sturdy brand, even when it falls from the bed its still working well