Glenn
Please remind me what computer operating system you are using for your Premiere Elements 13?
I do not think that is involved. I suspect it is the thin scroll bar but let us check that out.

Let us say that you want want to export an .avi file, you use that thin scroll bar to scroll through
MPEG
AVCHD
XAVC-S
AVI
Windows Media
QuickTime
Image
Audio
until you scroll to AVI and then make your choice of preset for AVI. If you decide the AVI default preset is not what
you want, then you press on the Advanced Button for that AVI preset to get at the preset customization area.
As you can see, there is more scrolling to be done to get to Windows Media (wmv) which is further toward
the bottom of the list.
Please consider and let us know the outcome. If those choices are really missing, then we are in major trouble
which may require a program uninstall, ccleaner run through, and reinstall with antivirus and firewall(s) disabled.
We will be watching for your results.
Thanks.
ATR