Blender crashes

every now and then, i end up creating something blender that crashes my entire pc, and its happening more now. is there some sort of way i can increase the pc power i give to blender (i have a pretty good pc), or an addon that warns me before i do anything that crashes my pc

You’ll get the best response here by providing some more details. What operating system are you running? How much RAM and what kind of GPU do you have? What version of Blender are you running? Is there a particular file or procedure that you’re working on when the crash typically happens?

Without more details, it’s incredibly hard to figure out what’s going on (and how to help fix things)