This is what i would try:
Firstly i would try it a few times to see if it just starts to work
If that didnt work i would do a diskdefrag just to test if your computer isnt messed up.(By doing tht you do Start>All programs>accessories>System tools>Disk Defragment).
Also maybe your spec of your pc cant cope with Windows Vista and LFS?
![](/static/smilies/shrug.gif)
(CPU or Ram)
Not saying these wont work but might aswell try putting more ram in depending on how much you already have
Good Luck