Question:Everything that is on the screen is too big. I can't get to the controls because they are on the bottom of the screen and you can't get to them because it's too big.
Answer: It sounds like either your resolution got changed or something happened with your video card driver causing it to revert back to a standard Windows driver which uses a much lower resolution than the proper driver would use. The first thing I would do is right click on the desktop and choose Properties. Then go to the Settings tab and see if you can move the slider to the right to increase the resolution. If you can't see the whole window to click on Ok then you can try to use the keyboard to navigate by using the Tab key and guess where the Ok button is and press Enter to hit Ok.
If it turns out that it's not a resolution issue then I would check Device Manager to see if there are any errors next to display adapter indicated by a yellow question mark or exclamation point. If it just says something like standard VGA adapter instead of the model of you video card then that would indicate a possible driver problem. If you don't know the make and model of your video card to get a new driver then you can either take it out and look for a model or if your computer is a name brand then you may be able to look it up on the manufacturers website and find the right driver that way. Then download and install the driver and see if it fixes the problem.