Hi, My computer keeps freezing up while i'm doing anything even just on my desktop, If i'm playing games I can usually still hear the game and my discord but the screen freezes. I thought it was my graphics card so I replaced it to a GTX750Ti but it's still happening, i've also tried factory resetting it back to when I first got it and re-installing drivers to no avail. My CPU is an i5 4440 3.10ghz and I have 8 Gb of RAM, i'm running windows 8. On my task manager my disk usage spikes to 100% randomly but I've tried everything suggested online to stop it and nothing helps.