For a while my Lenovo V570 will not boot up after it goes into hibernation. Either I have to let it sit on the Lenovo screen right when it starts up and after about twenty minutes the blue progress bar shows up and begins to move. Also the F-2 and F-12 for boot up options never appear. The other option hold down the power button, thus shutting the computer down, and wait and wait to turn it on again. HELP!!