hp notebook's screen goes black or it shuts off randomly...

Over the last week my hp notebooks has been (what I thought ) shut off when I didn't do it. It was weird though because after turning it back on, all my apps were still open. Now, a little bit ago, it happened when I was using it it... went black, turned back on, and the page was just up. Didn't even need to reload. Did a bit of googling, and found it might not be shutting off, just entering hibernation, but I don't have it set up to go into hibernation.

I also thought it might be because the battery no longer holds a charge and is slowly dying (at 7% for the last few days) but that doesn't really affect me because I always have it plugged in.

how can i find out why?

 

both sleep settings are set to never already. it isn't just the screen going off, because just pushing a key doesn't turn it back on. need the power button for that.

 

any overheating issue on the laptop? can you test the same in safe mode and see if it the screen goes off?
can you update the BIOS and test it again. while updating BIOS. always have charger or power supply connected to laptop

 

I have always had it on a cooling pad. I had considered updating bios because I looked around and thought it might help my battery issue but it seems rather complicated and I figured I'd screw something up. I will try safe mode though. Will also try removing the battery.. not at the same time though. I don't recall if the power button flashed.