Greetings!
I have a Lenovo Y510p laptop, and the Hard Drive is : ST1000LM014-1EJ164.
I'm not sure if it's just really sh*t, or if it is windows or another program is causing the problem.
I have set a custom Page file size, didn't seem to do anything. I have also disabled Superfetch and Windows Scearch processes, it didn't solve the problem either, it just made the 100% spikes intermittent. It happens randomly where the highest transfer rates are at 3.9 MB/s. This is slowing my computer down terribly. I'm thinking of buying a Western Digital Back² drive(A drive Linus reviewed a while back), if I can't solve this.