You don't need Kies to get to your Samsung Galaxy S5. Uninstall it. Crap, and intrusive crap at that. Worthless if all you really want to do is be able to access your phone's folders using Windows Explorer (or Free Commander XE, etc.).
What you DO need is Samsung's USB driver for Windows, from their download site
. Down in the Products -> Mobile, click on "cell phones
". This will produce a popup window, and you then select from the Product dropdown to specify your phone carrier, and then you'll be prompted to select from the Model dropdown. For example, my own Samsung Galaxy S4 is SCH-I545 followed by a "color" and memory size code (mine is 32GB black mist). I don't know what the model is for the S5, but you need to know it to make the right selection here.
When you finish with your specifications, you then push the DOWNLOADS button and it will present you with two download links: one for the user manual for that phone carrier and phone model, and a second for the USB Driver for Windows. Download and install. This is all you need.
Now when you connect your phone to PC using the USB cable, it will connect and communicate to Windows Explorer. The initial connection might be as an "installer", but that's NOT WHAT YOU WANT. Swipe down on the notification status bar (at the top of the phone screen) and tap on the "USB connection settings" item, and then select "connect as MTP". This is now like a camera or printer, where the phone and card storage of your phone will appear in Windows Explorer (like in your screenshots).
You can (or should) then be able to simply explore the internal/external storage of the phone normally as you'd expect.
I do this all the time with my S4. NO KIES!!!
I happen to use Free Commander XE
as my Windows Explorer replacement, and the phone appears under Computer. Expanding it shows card and phone, same as Windows Explorer shows.