You need to be able to start windows on your laptop to copy files.
If the laptop won't start then you would need to do one of the following:
-try booting into a recovery disk (http://www.nu2.nu/pebuilder/) and then copy files onto USB
- take the hard disk out and attach it to another computer and then copy files
- install another copy of windows on the laptop (don't format partition) and then copy
None of these options are very simple I'm afraid
Does the laptop just not boot ?