I recently bought HP Pavilion g6 laptop. It came with 4 partitions. I deleted HP_TOOLS (I took backup of it) and Recovery partitions (As I shrink the main C drive partition; recovery drive is no longer working). I installed ubuntu 12.04. It installed fine and my grub shows both windows and ubuntu. But, when I am trying to login to Windows 7 OS, I am getting a blue screen of death and restarting. Can any one help me out with this. I don't want to re-install Windows.