u/Electrical_Heron7115

I built my pc in december of last year and it has been working fine, but now whenever I try and open games or software my pc freezes entirely, I can’t move my mouse, or type anything on my keyboard, my button on the front of my pc doesn’t even work, I have to physically shut it off from the PSU, I’ve looked this up a couple times but nobody has the same problem, any answers? Games & software that freeze are, rainbow six siege, blender, and unreal engine, all my other games work fine, wth is going on?