[ubuntu] Disaster! Can't boot anymore. Please help?!

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http://ubuntuforums.org – Hi there, So I thought I'd give Ubuntu a go, but I managed to screw it up. I had changed some settings, so I decided to re-install. I didn't know how to do this properly, so I went and wiped the partition in windows, didn't I? Very clever. So now my pc won't even boot. I keep getting "Grub Rescue," and I've tried using unetbootin to run a windows recovery ISO from USB; it doesn't work. I've also tried super grub disc; doesn't work. I get two options: "Default," and "List Devices / Partitions." Neither option does anything when selected. Very pretty blue select (Hardware)