Frequent BSODs and black screens, also IRQL-NOT-LESS-OR-EQUAL

For the past month or so, my computer has been getting frequent Blue Screens, the most common error is IRQL-NOT-LESS-OR-EQUAL. I also have random black screens that shut down my computer while playing games (mainly Minecraft, to be specific) and while watching YouTube videos. There have also been some problems with my internet browser. When I click the icon on the taskbar, it will load and then automatically crash my computer. I have tried Chrome, Internet Explorer, and Firefox. I have also had startup repairs but they dont really seem to be doing anything to fix the problem. My computer is about a year and a half old (a HP laptop), and I have made sure all my drivers are up to date. I have tried several different methods, but the problem persists. I have noticed that the bottom of my computer generates much more heat then my old computer that I still have. Is this an overheating problem? Do I need to replace any parts or hardware? Any help would be very much appreciated.

I have edited the post.