I accidentally wrote grub 2 on windows vista and recovery partition while getting grub menu back after installing windows 8 (as it removes the grub). I tried reinstalling windows 8, thinking that it would reinstall boot manager as well, so I formatted the windows 8, but the installation stops at 31% and gives error 0x80070570 "Windows cannot install required files. The files may be corrupt or missing. Make sure all files required for installation are available, and restart the installation. Error code: 0x80070570". Though I used same setup earlier to install windows 8 successfully. Then I created a bootable vista pen drive and ran fixboot and fixmbr commands. Now grub has been removed from the boot files of Vista and recovery, but still I cannot boot Vista. It shows a black screen with a cursor blinking on the top left. I ran chkdsk command as well and it didn't give any errors. When I use startup repair tool through bootable drive, it says OS booted successfully. But I am not able to boot.
What should I do?
What should I do?