Thank you for the reply. I performed a clean install both high sierra and mojave. NO luck . I have tried both HFS and APFS. NO luck I have enabled filevault as well as disabled it. NO luck CPU usage is still at large (above 80%). It happens even on the old HDD that came with it when i purchased. Recently i talked to apple support. They couldnot solve the problem. Instead directed me to go to genius bar. Had an appointment today. In conclusion, genius bar guy said either try installing el capitan or sierra and upgrade HDD to SSD and RAM. I did both still the same. I think i figure out the problem but not the solution. Problem: Whenever i plug in my charger , in activity monitor the CPU usage spikes. If i unplug it , it goes away and runs normal. By the way I have two chargers and both chargers are fine because it doesnot have that symptom when i plug it into my 2nd macbook pro. Still looking for a solution. TY
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Hi, I am new here and forgive my english. I have just bought crucial MX500 2.5 SSD. Installed it. Start ups sometimes stucks halfway and when it fully boots then after some times CPU usage is more than 300% . I have tried reistalling but still no luck. So i am using OLD hard drive now and the high cpu usage system doesnot show up. Please help. Thank you.
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