Hello, i installed Oblivion on my new pc, and about 10 or 15min of playing, game crashes, it displaying error that oblivion stopped working and i must close it. I try everything to fix this,instal new drivers,patch,,deleting ini file,running as admin,changing graph quality and so on...and nothing worked. I played this game before about 2 years on my old comp with XP and no one single error has been shown... Is it bcz Win7,graphic card or something else..? Does anybody have solution to fix this?
Im running on:

Windows 7 Ultimate 32-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)
AMD Athlon™ II X2 250 Processor (2 CPUs), ~3.0GHz
Memory: 2048MB RAM
DirectX Version: DirectX 11
Card name: NVIDIA GeForce GT 220

i forget to add this.. when i ran Oblivion, it doesent recognize my video hardware and it sett all to medium. If anybody have solution please help.. Thanks

I can only answer the part you added about medium settings, which are the default for all new graohics, whatever grade. The game is almost five years old, and its internal database of graphics card is older than that by at least a month. The GTX200 chips, from which the 220 was derived, is over two years old, true, but still not old enough for Oblivion's launcher to have anything in its database to match. Given the age of the game, a 220 should have been adequate, whether it's only borderline for newer games or not. I will assume that it is a Windows failure or a Geforce driver defect keeping you from running, and that you'll get an answer on that, eventually.

I do not use Windows 7 as a game operating system, so I don't keep up with the correct hoops you must jump through for it.

You'll surely be running it soon. When you do, you can experiment with settings. I'd imagine you'll be able to change many to high settings, unless your display is very high resolution, which puts a damper on what a low end video card can do.