|Who in the world gave you that kind of advice? That's not the way to do it at all. I wonder if you might've damaged the working laptop's video subsystem by doing that. Does the working laptop's screen still work with the VGA cable unplugged?|
Anyway, there are a few ways you could go, but in my opinion, the most easiest way to get your files off is to buy a 2.5" USB hard drive enclosure. Unscrew the hard drive from the damaged laptop, put it into the enclosure, then connect it to the USB port on the main laptop. Windows will install the enclosure as an external hard drive, and you can then explore it like you would any other hard drive with Explorer. You can get an enclosure for about $20.