When you say scanreg /restore fails, can you be more specifc? Did you get an error message? Or did it tell you it restored a good (prior) registry and that did not resolve the problem?
Scanreg /restore will almost always "fail" if you restored the 5th or oldest registry. If you entered the command as scanreg/restore without the space after the g, it might not run.
What is the model number of your nec laptop? Maybe we can find the drivers for them. If you can't download them on the laptop, we can get you a "file spliter" program to download them to your current system and transfer them to multiple floppies for recombining.