I'm running Ubuntu now, and it's fine, but i'm more used to Windows, so i'm going to explain my problem.

I have trouble overheating with my laptop, like once every 3 hours or something. And one time it overheated, and I started it up as usual, but as I selected Windows from my Grub Loader, it came up the error message asking me if I wanted to boot into safe mode, last good configuration, or start normally. All three, when I click on them, will cause my laptop to reboot and do the whole thing again.
The partition is still fine, I just can't get boot up into it. I'm thinking about finding a Windows installation disk and doing a fresh install of it. But I didn't get a disk with it. If there is any way you could help me fix my Windows I would love it, Please help!

(PS, I'm not keen on sending it back to get fixed, Only as a last resort.)