I recently 'upgraded' to Windows 10. Since the upgrade, I haven't been able to wake the computer from sleep mode without shutting it down and restarting it. I have done the standard troubleshooting, tweaking of settings. Everything says that I should be able to: open the lid to my laptop, press a keyboard key or the power button to wake it from sleep. Nothing works. Or sometimes it will work for 2-3 days, then go back to the way it was. Please help!