I recently found windows 7 hibernate not working. I dont think it is caused by any software or driver. I assume all power option settings are correct. hibernate is active in shutown menu. when I hit hibernate the screen would turn off, then after 2 seconds it turn back on, back to windows screen. I tried sleep, the power turn off immediately, but would not wake up, windows suppose to wake up by a keyboard stroke, but keyboard would not wake it, so I press power button, power up but windows would not log on, then I have to press reset button, screen goes to windows did not shut down, safe mode or start normally. I tried run, sfc, no error. any one can help solve this?