The drywall crack just left of the window in the first photo was the result of the sill plate sagging over a basement window. Typically basement windows are placed to have 4 to 6 inches of reinforced concrete over the top. In this case the thin metal on the window frame bowed down allowing the sillplate and the joist on top to sag.
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Good catch and thanks for explaining it to us.
The condition you illustrate is one that is very common, although I have yet to see the expected settling crack in the room above. When I was building, we used to install a joist hanger in that type of location, thus transferring the floor joist load to the rim board.
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Do you recommend a remedy other than drywall repairs for something like this?
A joist hanger as Michael mentioned would be the easiest fix possibly jacking up that window frame and inserting a 4x4 block in the window. Installing an adjustable steel column would be my last option.
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Doesn’t that fenestration opening require steel or concrete to span the opening? Isn’t that a building error?
That aluminum frame insert looks cock-eyed in the opening, but you can definitely see how the outer frame is bowed at the top of the aluminum frame. 
Did that basement window still function Randy?
2 x 10 joists and rim, or 2 x 12 joists and rim; not a structural issue spanning 32 inches. One could figure out the loading and consult a span table (maybe I did at one time??). From a quick internet search, 1 - 1/8 inch thick LVL rim board (chip board style) probably is not an issue at that location either. I’d have to call the service desk at the lumber yard for a final answer. We inspect for function, not necessarily for code. That is a single header condition, assuming the joist is fastened to the rim board with a hanger.
Morning, Micheal. Hope to find you in good health and spirits. Happy New Year to you and yours.
Randy posted; Typically basement windows are placed to have 4 to 6 inches of reinforced concrete over the top. In this case the thin metal on the window frame bowed down allowing the sill plate and the joist on top to sag.
The defect was built in. It is a perfect lesson for inspectors to consider when inspecting foundation fenestrations and diagonal drywall cracks next to windows in the floor above.
Thanks Randy!
I find it interesting there is such a concentrated load here, especially with a window above. Is the window above offset? Is there a king stud bearing here?
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