Is your computer acting weird within windows? Do you not remember the last time you actually restarted it? I mean really restarted, not just closed the lid or put it to sleep. Rebooting your computer can save on a lot of problems. Click the start button, then click the power icon, then restart.
If your computer does not respond or is on some odd screen outside of windows, you can Hard Reset it by holding the power button for a full 30 seconds so that it powers off. Then turning it back on.
Note that you don’t need to do either of these more than once in a sitting. If either of these don’t help your issue, drop us a message to help out!