Recently one of my RAM sticks stopped working unsure of why. They are both HyperX DDR3 4gig sticks, i reseated them and got both of them to work again, but when i tried to boot i got an error that windows did not launch proply. Since i got this error my computer is running very slow and every game i try and play gets terrible FPS issues to the point where its nearlly unplayable. I have already tried reseating the RAM again, resetting the BIOS battery, a scan and repair, uninstalling some unused games/programs, checked comp temps. I would like to reset the computer to factory but when i try i get a windows is missing files error. Could this be the cause or is it still the RAM?