Please I seriously need help, I originally had installed on my laptop a windows 7 OS , then later on I decided to create a partition on my head drive so that I could also instal windows 10 OS. I later decided to just stick with the windows 10 and stopped using my windows 7. So I accidentally formatted the original partition which contained the windows 7 and now my laptop won't boot even though I still have windows 10 installed on the hard drive.