flairclapper

my gpu temp while in game is around 65 and now my cpu temps is 63 in game 
i did what rickeo said clear the cmos and removed cooler reapplied thermal 

Completely revert everything you've done to the board. Better yet, clear the CMOS and start fresh. If the PC was given to me, i'd re-do the thermal paste application and more importantly the cooler mounting myself then boot up and run only HWInfo or Ryzen Master for checking temps. 
 
Regarding the MSI AIO, those are dying weekly around here, absolutely terrible unit so no surprise there. The FUMA 2 on the other hand is a very competent air cooler. 
 
You have two likely scenarios and another very unlikely scenario. First, your mounting method and airflow is extremely bad. 
 
Second, a sensor onboard the die is bad. This is very unlikely. 

When compared to a new machine it’s more or less a 3600 with a 5700xt.  Fewer driver issues, less future expand ability.

Absolutely pointless to ask here, especially with the complete lack of information you've provided.
Go to your local classifieds Compare pricing Price accordingly Sell Profit We don't know where you live, and pricing varies drastically location to location. Don't bother saying "oh, I live here" because honestly, it's on you to research your local market. The only way it makes any sense is if someone lives in the exact same place you do, and for some reason knows the market at that given time.
 
If you want to sell online, go over to the Reddit Hardware Swap and they have a thread where you can ask and people will give what it would sell for on that forum.
 
Can't really assume he's in a place that uses $, not to mention comparable AMD systems are pretty cheap.
If you pay that much for used parts, you're my kind of customer ?

probably about 1500 i added up all the prices and i got £1427.70 or €1650.65

Never a good question here.  Often The way to get the most total money for it is take the thing apart and sell the pieces individually.  More trouble though.
 
Prices change drastically quite quickly.  The best place I know of to judge these things is go to eBay and play with the filters.  There are a lot of them.  The most useful one for you is going to be “completed listings” that shows what other similar devices have sold for in the past.

It is a good build that objectively can cost 1500$ ++, but the fact that it is used the game is lost.......