if it boots to windows, that´s the first step to know it could be ok
then you will have to test your system e.g. with prime95 (smallfft) to get the cpu a full load. If there isn´t an error for about 8hours, it should be stable. Check the temp margin with "amd overdrive". if it´s getting near "0", it will overheat/throttle to get normal temperature.
No problem there, because the cpu will just throttle and wouldn´t be damaged by it. If it´s getting near to "0", the voltage is too high or the cooler is not sufficient or the CPU is not overclockable more then that.