I installed Ubuntu 12.04 as a dual boot with Windows 7 (64bit). Everything was fine yesterday, but when I am unable to boot Windows 7 after tried to boot. Windows couldn't fix it and neither did system restore.
Here's the pastebin of boot-repair.
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You have to run Boot repair for Windows, If you have an HP simply boot into your recovery partition and select start-up repair, if not you must insert your install disc and from there choose start-up repair.
Try to repair Windows 7 booting either by creating Windows 7 Recovery CD/USB or downloading and burning a Windows 7 Installation USB/DVD (download links are given on page).
Once you have Windows running again you can reinstall Ubuntu GRUB/wubi.