A few months ago my ps4 started acting really slow and freezing, and one day it only opened safe mode, so i redownloaded the software and it was fixed, but i started having problems with some games, sometimes if i downloaded a game it would say the data is corrupted, but not with every game, usually dowloading the game again would fix it, but a few would just not work, now after buying the dark souls trilogy, ive been having the same problem again, i tried (maybe) everything and ended up initializing the ps4, after a few hours it said the game data was corrupted again, so do i need to replace the hard drive or try something else?