My Helios 300 was running quite hot, and in cleaning out the fans I noticed the paste was poorly applied and decided to redo it - followed a YouTube video to do it.
The good: CPU and GPU now run nice and cool, so that seemed to go well.
The problem: "system" is now running too hot, suggesting there's a problem. What I can't quite tell is if the problem is that I didn't use enough paste on other areas (related to system), or if I should have used "thermal pads" or such things.
Hopefully my attempt at inserting a picture worked. The pink areas were areas I cleaned and put the thermal paste on as well (as per the video guide I watched), but I'm wondering if I did too little there.