I think I'm gonna try the SSD first, see if it helps.
Btw. I took a look inside my PC case and I'm kinda confused now. Firstly, it seems like my Mobo has 4 sata slots, 2 of which have cables plugged into them (Dvd drive and sshd). The slots were labeled sata 0,sata 1,sata 2, sata 3. Does it...