First off my computer has always worked fine when going idle, the computer would go into sleep mode after an hour or hibernation mode which ever one, when the computer seems to be off when its not and power light blinks. About three days ago my computer started acting weird when i let it go idle instead of it cutting off after sitting the monitor will say no signal but the computer will still be running fans on and everything, if i click on the mouse or press buttons on keyboard nothing happens only thing i can do is cut off the computer or press the reset button on the case. i dont know why it started this all of a sudden but i need help fixing i hate having to turn off and on by the power button when it does this.