I just want to know if i need a new CPU or something else is broken that i need to buy
I’d just like to fix my computer ASAP
You still need to do the basic things first before wanting to just throw money at it....you can certainly buy all the hardware you want, but if you don't know what the problem is you might as well just wire me the cash and I can spend it on random things instead.
If you haven't acquired extra standoffs for the missing spots in your case, in my opinion, you need to do this. If you don't wish to, then fine, we'll move past it.
Also, you haven't provided us with pictures of proper cables being plugged in.....there's really not much else we can offer for you to do in terms of help.
We're not there with you. We can't see what you're doing. We don't know how else to proceed without help from you on your end.
At the very least, you need to build the system out side of the case, on top of a cardboard box. It's been suggested a handful of times, but you never said you've tried this.
I'm not sure what else you expect from members on the forum here, lots of ideas have been tossed out. You've said you've tried some things and nothing changes, but the minimal things necessary to test a system haven't been done; like building it outside of the case, on top of a cardboard box.