You can disable Superfetch by going into Services (Local) and changing it to Disabled.Type services local in the Start Search bar and click on View local services, then scroll down the list to Superfetch where you will see if it is disabled, on manual, or on automatic.
You can disable Prefetch by going into your registry and making the following change: Hkey_local_machine\SYSTEM\CurrentControlSet \Control\Session Manager\Memory Management\PrefetchParameters, right click Enableprefetcher, hit modify and change 3 to 0 and hit OK. Once you click OK you can exit Regedit.
You should backup your registry before making any changes. Disabling Superfetch and/or Prefetch is entirely up to you.
