I had recent problems installing Ubuntu in my pc, sharing the disk with Windows 7. Mouse and keyboard weren´t recognized during the installation in 64 bit. I partially solved the problem when I found out that they were working in the USB 3.0 ports. Before this, I got desperated trying alternative ways of installing Ubuntu, which includes installing it with the Wubi utility and finally, from a LiveCD, overwritting this Wubi installation. Current situation looks like that: Ubuntu starts perfectly after grub, no problems here. If I select Windows in grub, it takes me to the Windows boot manager which appeared after using Wubi. It gives me 2 options: Windows and Ubuntu. When I choose Windows, the Windows loading screen appears for few seconds, flashes a blue screen and reboots. I'd appreciate any help with this, cause I am "a bit" lost.
EDIT: I've already tried Startup Repair with the Windows installation cd and the commands
bootrec /fixmbr and
bootrec /fixboot in the command prompt with identical results.