my toshiba is dying and i'm trying to figure out if it needs some replacements. the problem is that it keeps shutting off. it's not completely off, because the light on the button still looks like it's on and i still hear the machine running. the screen just goes black like on hybernate mode. the turn on/off button is also giving me problems. usually, i didn't have to press so hard to turn on or shut off, but now i have to really press it down to turn off. is this fixable?