hey just wanted to let you know that if your computer seems like its stcuk on stage 3 of 3 configuring service pack do not turn off your computer. dont worry. it just takes a while. mine took about ten minutes so be patient. i thought that my computer was frozen because i didnt see any progress. but after waiting like five minutes it showed the percentage and it got till 100%

finally after like 15 minutes. the whole thing complete