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My husband's computer had a problem recently.   He is using Lenovo laptop and it's only three years old. It was really weird, because it was running fine without any issues until then. and there was a lot of space in hard drive. But suddenly , it was running slow, so he pushed power button to restart it. Then he could not get to the main screen and always reached to the automatic repair with blue background color page where there is message shows  " Your PC did not start correctly "     and there are two buttons       " restart "   and  " Advanced options " . When we chose " restart " ,  it came back to the auto repair page again. and when we chose " advanced options ",    message showed " choose an option "   for " Continue "  , " Troubleshoot " , " Turn off your pc " . So we chose " Troubleshoot " . and then in the " Troubleshoot