Now power from my living room. The outlet on the same circuit also now power. I used the Sperry Instrument tester and the outlet show lights on correctly. But when I plug a load on like a lamp or turn on my living room fan, then the Sperry instrument switch the lightning from Correct to Hot/GRD Reverse. But this living room has been good for 10 years already why now. I took the initative the replaced all the receptacles on the same circuit but still do the same thing.

I wonder if you don't have a place where the wire has abraded through and is now able to track to earth, or even a Partial Disconnection of the Phase wire, at that point and where it has worn through, it is contacting ground. You could have a Phase disconnection, that is touching earth, and when a load comes on, the fault, because of the current draw, now goes "Full On" as it "Shorts" to earth, while at same time, cannot deliver much current past that fault point. You need to remove Power from that Circuit, then measure, for Continuity, from Breaker Board to each wire in the Socket, and From Phase & Neutral to Earth. You should get continuity between Phase & Neutral, BUT nothing between each of those and Earth. If you twist together, the Phase and Neutral at the Socket, from the breaker board end, you should get a very LOW OHMS reading under 1 -2 OHMS, if not that is a fault.