Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
What are you using to stress the CPU to see if it's stable? You have to run something to keep the CPU usage at 100% to check for stability. Do a google search for Prime95 and run that for a while to see if it's stable...
Also using the computer will tell you if its stable or not. Play some games do a few other things. If its not stable you'll know. If it is then move up to the next level.
make sure you enter the password into prime95 in order to get the stress test. i believe it's 9876. run the stress for the maximim amount of time you'll use the computer in one sitting, then add an hour or 2.
max time in front of computer i.e. games, photoshopping: say 3 hours.