Thank you so much for your helpful response. At last i have managed to reinstall windows 7 perfectly through my bootable USB flash drive. Feeling relieve now. :)
Hello, I am using HP laptop. I was using windows 7 operating system. But for some kind of problems i thought to run a set up in my laptop. As i heard from some people that Windows 8 is better than windows 7, so tried to install windows 8. During installation i did format to my installation drive...