You can if you lauch Oblivion using Oblivion Launcher.exe instead of Oblivion.exe
Or just go find the .ini and change the values to what you want
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No, I don't mean it doesn't give me the launch menu, I mean in the options IN in the launch menu, it doesn't have the video quality preset options. You can only change the resolution, disable distant land, ect, but no video quality presets. And how would I go about changing the things in ,ini to make it just like very low quality graphics?