Hmm.
What I meant was a special key, which may be F10 for example on the keyboard, depending on the Laptop manufacturer. Many tend to place a recovery program on the hard drive which is nothing to do with Windows, and can fix many problems your Laptop is having.
I'm afraid though, it seems your Windows installation is completly bust, as it may have lost a file, and is just continually resetting since it can't find it.
The only thing I can suggest is a full format and start over, but I don't really want to recommend that if your going to lose files in the process.
I'm sure someone will think of a way that might help you though.
We need some way of getting data off you want, while not in Windows and copying to DVD or CD or another device.