August 2nd, 2018, 1:35 pm
Basically, computers need power and data to boot up, you're saying the keyboard lits up..so it's not a power issue, it's a data issue. And according to my very little experience within the pcs world, it can be caused by the dislocation of a ram, processor issue, or a hardware badsector in the hard drive (most common issues). Make sure the rams are properly placed in their slots, if they are, you must have the laptop checked by a professional :/
EDIT: Can you remember if your laptop was bumped while running during the past few days or not? And, btw..does it make any sounds?