I know the rules yet I took for granted and skip some process because I don't feel like waiting for a few minutes more. Now it's too late again for me to undo things I did.I learned my lesson the hard way.I have done it a few times and when I get back to my pc to open, it would load normally. But this morning, my being impatient when shutting down my computer had teach me lesson. Maybe my pc had enough, and reach it's limit. Now I have to pay the price.It's useless to think of those precautions I should have done. No more time to cry over spilled milk.Regrets are always at the end.