I have a Toshiba Satellite that came with Windows Vista A200-2B7 and I installed Ubuntu almost a year. Last night I was fussing a mp3 through gparted and suddenly the screen freezes and I decided to use REISUB. When restarting it asked for the "rescue grub". Since then I've followed these steps - https://help.ubuntu.com/community/Boot-Repair - but it didn't work so here is the link they gave me - paste.ubuntu.com/5846122/.
I'm a noob so be gentle. And will this process erase my files? Because I don't want to lose my files.