I installed 12.04(64bit) alongside Windows 7 (64bit) through a USB drive.
Earlier I couldn't load Ubuntu without a USB drive until I ran
sudo grub-install --force /dev/sda2.
But now I can't load
Windows 7 (loader)(on/dev/sda2) in GRUB. When I select that, it displays a black screen and then returns to GRUB.
Help me to solve this. I read "Installing GRUB 2" article but I cannot understand what I should do.