I have a Toshiba L50-B I was using it today and it just turned off and I tryied turing it back on again wouldn't even try to turn back on but then I waited 30 minutes and it turned back on but turned off in like 20 minutes if useing it I tried that same process to turn it back on again stop won't go on then I cleaned all the fan and dust build up but it still dossnt work does anyone have a solution to this?.