Resize with gparted broke dual-boot

After following the guide here and sucessfully setting up a dual-boot with linux installed first, I soon decided that Xp didn't have enough disk space and resized it with gparted. However, after the resize, linux works fine but windows simply wont boot, with an abnormally fast boot screen with the bars moving accross the screen, and soon after the "Windows is starting up" dialoge appears, however without the "Windows is starting up" text, and just hanging there. Is there any fix that means that I don't have to reinstall Windows?