it’s hard to make out the photo solder flows towards the heat.

Video https://streamable.com/zeu6gm

Thanks for all the info so far! I’m trying some stuff but failing miselably haha

Added video https://streamable.com/zeu6gm

additional internal battery

After removing the CMOS battery in addition to the main battery, an powering the laptop on it worked. After, I readded both batteries and it now continues working. Maybe I should replace both batteries to avoid that happening again in the future?

Thank you very much for your support!

Not really; when it first happened I was just using the laptop normally. Then the screen got black out of the blue. I tried turning up the brightness while the laptop was still on, but then it powered itself off. Now I cannot even power it on (yes, power cable is plugged)