My dell laptop not working properly past few days den in de morning i turn on de computer and i turn off the computer it automatically started updating windows . 4 hours of regular update and with a message "failureconfiguring windows " .i m regretting right now as affter turning off ..i turned on ..nothing is showing up ...just blank screen ...plaese help me ..what should i do now . Can i recover my windows i have very important data in it..helpp