Computer is over heating. At first it had a Very loud grinding sound

alnut 60 going by your description of things I would suggest that for now you stop using your computer. you will have to disassemble it and take a look at the components installed. For now since you had that noise as well as the overheating , you want to check the fan and possibly replace it. The only other part that can make a “nasty” grinding noise is a failed hard drive but that would cause your computer to not start up into any operating system. Again. Open it up and take a good look. you can always come back and clarify and explain to us what you find out. something like this should help you out. You can also post some of your own pictures with your question so that we can see what you see. iFixitでの質問に画像を追加する方法