I installed Ubuntu on my pc a few days ago from a USB drive. Everything was fine at first, I could boot to either OS without any problems. But today when I tried to start it, I can't boot at all. The computer posts and says that it is "loading the operating system" like always, but it isn't showing the options of which os to boot. After a little searching on Google, I tried holding shift to load Grub. It says that it's starting but that doesn't get anywhere either.
I don't have Ubuntu on the USB anymore, so I can't try to load Ubuntu from that. I don't really feel like wiping both harddrives and reinstalling windows from scratch. Any advice would be appreciated.