Hi, so firstly my rig,
i7 4770
asus mobo sabertooth z87
8gb ram kingston
cooler master gx 650 watts
gtx 760
2tb seagate.
Problem:
My system was running smooth till i got a s.m.a.r.t hdd error, so replaced my hdd. afterwards when i was updating it to 8.1 from 8, it was a standard procedure...