Well first off, UBCD is FREE and with proper knowledge can be used to repair majority of computer issues. Have you tried pressing F8 on computer boot before windows login screen and start computer normally?
Maybe the disc messed with some files and caused problems with your windows install. If you cannot press F8 to boot into windows then you will have to do a windows repair using the windows cd.
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~Just StopSpazzing~
Visit the UBCD Wiki:
http://wiki.ultimatebootcd.comPlease check your
UBCD ISO
MD5 Hash Sum; May prevent issues later on by not having an exact copy.
Currently Working on
Common Issues and Repair Tips on the Wiki.