it was working perfectly fine just a few days ago with the latest turbo boost drivers: 8.15.10.2302 suddenly, i don't know what happened (the last thing i did was change the font dpi settings) but now, loading the os takes much longer and with those same drivers, the screen displays nothing but black even after reinstalling them in safe mode. i've resorted to using the older drivers: 7.15.10.1908 which actually work perfectly, but i'm very concerned about what may have caused this in the first place. one possible clue: when loading the os in safe mode, it actually hangs for about 20 seconds on a file that it also hung with when attempting to load the os from a hdd that then shortly died. could it be that this hdd is dying?