|Somehow I doubt a factory reset would be wise at this time...|
Borrow an external monitor and check if you can see the desktop etc. that way. If you see the desktop that way, then problem is likely not directly related to the operating system etc. as installed.
Go to ubuntu.com and download the free ISO file which burn to a dvd.bot with dvd.
It will load itself into RAM only. Provided you can see its desktop (on the laptop screen or external monitor) locate the hard drive and copy all your file to external storage first. Typically dvd but another external hard drive is nice(r) too...
Then if needs be consider a factory reset routine; knowing your personal files are safe elsewhere off the system as is.
When you boot up from cold do you see anything (even briefly) on the laptop screen?
What actual model do you have?
Another option that occasionally resolves odd situations is to: remove mains power, remove battery too. Then press and hold the on/off button on the laptop for about 30seconds. Then reinstall the battery, and mains and reboot. It's a very long shot on this occasion, but it has been known to resolve a few odd events at times.
Your prime concern ought to be safeguarding your personal files (first); which is why the Linux (ubuntu) disk routine above. If you cannot get a display even on an external monitor, then consider removing the hard drive and connecting it another (working)system - via a usb adapter. Then locate/copy your files as above to dvd at least After-which set about finding what is really amiss with your laptop...