SOLVED - I updated the SATA drivers for my motherboard and it seems to be back to normal.
I recently replaced the PSU on my old PC, and now it stutters/freezes every other second, even when not doing anything graphically intensive (even typing in a browser will stutter, with three letters or so being lost every third word). I just reinstalled Windows and updated BIOS, but the problem persists. Help!
Apologies to the random YouTube video I filmed for this, I figured a graphical demonstration was the best and this was the first video in the queue.
![](https://i.ytimg.com/vi/Mel5LrwUbNM/maxresdefault.jpg)