I've recently (about a month ago) installed Windows 7 and Fedora 18 as a dual system on my Dell Vostro laptop, and everything went well until my Fedora started shutting down out of a sudden, just like that. When this reached the end of my patience, I tried to reinstall Fedora 18 on that specific partition (size: 77 GB), but while installing Fedora 18, it still shuts down, so I can't get over with the installation, moreover, I can't reach my Windows-partitions, because of the missing grub bootloader. What could I do?
NOTE: When I was on Windows, it didn't suddenly shut down. UPDATE: It seems that the shutdown persists regardless the Linux distribution. I tried to install Ubuntu 11.10. I can't get through the installation process. I'm clueless.