I had this happening with mods before, and the error window was the one that said "close the program & check for a solution online" or "close the program".
After unchecking all of the mods, using just oblivion.esm, the error window is different while the crashes happen at the same times.
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Microsoft Visual C++ Runtime Library
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Runtime Error!
Program: G:\Oblivion\Oblivion.exe
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
Microsoft Visual C++ Runtime Library
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Runtime Error!
Program: G:\Oblivion\Oblivion.exe
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
I have installed Oblivion, SI, Shivering Isles 1.2.0416 patch, as well as the 4 unofficial patches (although I don't know if unchecking mods disables those).
I'm running it on Win7 x64, not in Program Files, 8gb ram, pretty good video card which never uses all of its ram and doesn't overheat (I have a monitor).
Searched the forum for runtime and this wasn't here, so I'm asking for help please.