Hi,
First sorry..you have to give some more specs ....
Nvidia...make sure "Antialiasing - Transparency Multisampling" is Disabled to start with.
Either way just guessing here need more info...default INI ?..bla bla...
Easy way to take screenshots....hit Printscreen. The file is saved in the Skyrim folder. Upload, and then post it here.
Use Fraps.
Use MSI afterburner(I do) it will Save to the Directory of your choice..and can save as ..BMP, JPEG, PNG.
Edit: to add Steam also can save screenshots (don't use it myself, MSI FTW) think that is ?...F10 ? then you save to cloud?