http://windows.microsoft.com/en-US/wind ... dows-Vista
On the Advanced Boot Options screen, use the arrow keys to highlight Repair your computer, and then press ENTER. (If Repair your computer is not listed as an option, then your computer does not include the System Recovery Options menu as a preinstalled recovery option.)
If your computer is under warranty, could called the Manufacturer and ask them questions. Or just use the recovery partition...after backing up all your data.
Visit the UBCD Wiki: http://wiki.ultimatebootcd.com
Please 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.