I'm going with NO. The sticker on the bottom of the laptop is an OEM license number. As far as I've ever seen, no manufacturer allows you to download the OEM ISO - they usually have links to order a new disk from them.
The legitimate links you usually see for Microsoft are MSDN, ActionPack, TechNet links and those ISO's are usually volume license (VL) or retail versions and require VL or retail key numbers.
The questionable links you see (torrents) can have who knows what on them - I personally wouldn't touch them ever - you can't tell if they are complete, unmodified, clean.
That said, some will tell you it sometimes works, and sometimes it does, but this is hit or miss.