Hiren’s BootCD is something I use often to clean up and fix most Window’s issues. Boot into this Windows XP live image that’s preloaded with many tools using YUMI.
YUMI is a great tool for loading operating system’s onto a portable flash drive. Installing operating system’s or even if you’re just loading a live image (eg Hiren‘s), it’s much faster than loading from a cd/dvd. Enter your BIOS’s boot menu and find your USB drive after your first setup of this application.