What should I do if I don't go to Linux after reloading Windows? Don't be afraid, your Linux is still, just GRUB is not seen. So just reloading GRUB.
If there is a Linux installation disk, first safe mode (F5 Linux Rescue ), then run the grub, enter: GRUB> root (hd0, x) GRUB> Setup (HD0) is OK. Where x is the disk where Linux / boot is located, if you don't ask, first take a look at it.
Oh, I will know that I am Linux novice.