OK a few things come to mind: Did you check sha-whatever to see if it copied correctly?
Second, I assume you downloaded the DVD_x86.iso file. While it says “DVD” it will NOT fit on a standard DVD or even a 2X DVD it needs to be copied to a thumb drive, and installed from the thumb drive.
Third it is frequently a good idea to simply run the “troubleshoot and install” rather than jump into a straight install. The troubleshoot will usually catch any corrupt files.
Assuming everything checks out when you do the actual install choose "Desktop + GUI, DO NOT choose “MINIMAL INSTALL” as once you reboot it will drop you into a MINIMAL INSTALL ie a Konsole.
When you choose Desktop + GUI (or whatever it is) the GUI you will get by default WILL BE GNOME. If you go hacking or know someone you can load a lot more DE such as KDE, Xfce, Cinnamon, MATE, and a few others. I usually load at a minimum both KDE and GNOME (partially because I use KDE) but also if things go south during login you can try an alternate DE other than your preferred one. If you still have problems, that means something is really screwed up; if not, it usually means that the problem may be within you config files.
In the instant case go back to the beginning and make sure you downloaded a CLEAN COPY of the DVD_x86.iso, and make sure you copied it to a new or unused thumb drive, then make sure that the thumb drive is the first thing that is loaded by BIOS. During the actual install DO NOT choose “Minimal Install”, but either Desktop or Server + GUI .
If you are really having trouble with the install (Anaconda can be a bitch) see if you can find someone from a local LUG give you a hand.
Hope this helps.
D’ Cat