Can't help with any PC/Windows issues from Apple Land, but here's an encouraging (((( HUG )))) !!

windows 7 control panel-- then appearance and personalzation

It's ridiculous, but this is how you shut down Windows 8: Mouse over the little gadget in the lower right corner of the screen. (You can also move your mouse cursor to the upper left corner; same result. Or, you can press Windows-C on your keyboard.)

2. In the slide-out menu (known as the Charms Bar) that appears, click Settings.

3. Click the Power button, and then click your desired action: Sleep, Shut down, or Update and restart.

You can create a shortcut on the desktop so you don't have to dive in so deep to get there:
https://www.pcworld.com/article/2038647/how-to-create-a-windows-8-shutdown-tile.html

Usually, in your Internet browser there is a View menu item and you can use that for just the browser. For the whole computer, to increase the text size, go into Settings again and look for Display.