bulletz

FalleN (Gabriel Toledo) from CS:GO for creating a competitive top team in a country with basically no competitive scene. They lack the firepower to go up against top teams without good strats which FalleN provides. He's the best in-game leader (right now) in the game

What are these problems your talking about. BSOD's? random frezes?
Id run memtest86+ for a few hours to check ram. 
Then run prime95 for a day to check cpu,
then run furmark for a day to check gpu.
If there all fine you may have a bad driver and maybe try linux on a usb to see if you are getting those same problems and ifs it a driver problem.

When applications load files that on the external HDD they're slowed down by the speed. Transfer speed doesn't mean anything. Try unplugging it and see if that helps. My old external HDD was slowing the shit out of my PC a year back.
 
Have you kept an eye on your temps? That AMD chip runs really hot, you could be thermal throttling. 
 
Also your PSU is kind of weak for running AMD parts.
 
Also reinstall windows. 

allu, pronax, or NiKo (CSGO)
 
SpawN, cogu, and maybe fRoD (CS 1.6)