About once a day it will occur that when I press the power button to wake up my Surface RT the display will not come on. I can press the Windows button and feel the vibration so I know it's powered on but the screen does not wake. I can hold the power button until it powers off and there is no vibration when pressing the Windows button. Then I can power the Surface RT back on. This has worked without fail to get it usable again. This doesn't happen all the time either, just relatively frequently. Anyone know what might be causing this or if there is a fix?