In Windows 10:
Go to Start/Settings
Click on "System, Display, notifications, apps, power"
In the window that opens, make sure the overall DPI size slider is set to the "xxx% (Recommended)" setting. Unfortunately you cannot change both the overall DPI and the font sizes. It's a one-or-the-other deal.
If you moved the slider, you will need to sign out of your account and log back on for the change to take affect, then come back to this page
Once the slider is at the Recommended DPI for your monitor, click on "Advanced display settings" at bottom of this page
In the "Advanced display settings" window, scroll down to the "Advanced sizing of text and other items", and click on it
The window that opens has a section titled "Change only the text size"
Under that you will find a drop down menu that gives you the ability to change the size and whether or not to make each one bold typeface or leave as regular
Use the dropdown menu to select what you want to change, then use the other dropdown menu to set the item to the size you want to use. Check the box if you want it to be Bold.
Do this for each item you want to change.
After you've made all the changes you want, click on Apply. You may have to sign out and back on for these to take effect. If they do not show up, come back to this window and see if your sizes are now showing up in the dropdown items menu. If they are listed here to what you changed them to, and you don't see them where you thought you should; you'll need to do a full restart. If you do not see your settings, repeat making your changes again. Make sure you click on Apply and then Restart your system (do the full Restart not just sign off account)
Hope this gives you at least some of what you want. You still cannot change the basic font size in the File Explorer windows (when viewing items in Detail view and some app context menus) without editing the registry.
As mentioned you can make some additional changes to the overall fonts by editing the registry. If you want to make these additional changes you can go to this link for help. http://answers.microsoft.com/en-us/w...e-517521a8502e Make sure you backup your registry before you start editing, and be VERY careful. You can really muck up your system if you do something wrong with the registry.
I just installed Win 10. I can go to Control Panel, Fonts, Change Font Size, and then change font text size for desktop icons, menus, etc..
In Windows 10 do the following to change font SIZE of Desktop icon fonts. 1.) On the desktop, right click on the mouse button 2.) Choose "Display Settings" 3.) On this page In the center, on the bottom, click "Advance Display Settings" 4.) On this page you do not see the entire page and you must scroll down some to see the entire page. After you scroll down, on the far left of the screen (second from bottom) click "Advanced sizing of fonts and other items" 5.) This is where you can make font sizing changes. In the middle of the screen there is a gray box entitled "Title bars." Press the arrow down button within this box 6.) In the list that comes up, select "Icons" 7.) Now, the box reads "Icons." To the immediate right of this box is another box, which is the font "size" box. In the font size box, press the arrow down button and change the size from the default size of 9, to 10, 11, 12, etc (10 is good). 8.) To the immediate right of the font size box is a "Bold" check box. Put your cursor in this box and click your mouse button. It will add a check mark within the box. 9.) You have done it! Close all the boxes you have opened. Now you can read the lettering under the icons.