Barry~~

hmmm... I'll try buy a 2.5G switch actually, seems like a more reasonable way.
Though I try to use the plan 1 first, see how it goes and see if I'll buy the switch. Thanks for you time and effort! Have a nice day and keep well 😄

ok fine... Seems like reinstalling is my only options then. Debugging is too hard. 
Thanks for the help mate, I'll reinstall when I finish my report 😄

Sorry, while I'm totally on board I just way to say this is painful for OP, kryonaut is like 8x more expensive than mx4
Mx4 is actually pretty cheap, kryonaut is basically eight times the price per gram.
 
Kryonaut ($12 per 1 gram)
 
mx4 ($1.55 per 1 gram)

This is the paste I recommend, similar performance to kryonaut and costs only slightly more than mx-4
 
https://www.amazon.com/gp/aw/d/B002CQU14A/ref=mp_s_a_1_1?ie=UTF8&qid=1521618998&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=nh-t1&dpPl=1&dpID=31twu4nUi7L&ref=plSrch

If you can get nh-t1 do so, it's what I use in my own rig (cuatom loop 6950x + 980 ti) my families various pcs (4690k + 770 and 860 + 770) and I honestly like it better than 99% of thermal paste.

fine I'll try it a little bit later. How about something else but not about hardware, like some software adjustment to let the temp be down, Becuase I really needs it to be cold enough so that I won't be worry about that. I'm wondering what if Linus have a PC like this