i got a simple problem where i have ati hd 4890 xoc video card and when i try to play oblivion it crashes all the time, while other games like fallout 3, fable, and other games don't apear to have any problems ...
yeah, simple mods or dlc's even crash the game, but the game with out mods works somewhat, i just don't understand why it would crash on me. I used to have 9600 gt and it never crashed on me ... with the same mods and even on my x3100 it never crashed on me with over 100 mods to it, this time if i used even 5 mods it crashes ...
I have a 4890 in my Vista-64 machine, and I can run both games un-modded perfectly. I've been able to do so since their release with no problems, regardless of driver version installed. I highly doubt it's the card's fault.
Have you considered installing either Vista or Win7 as a 2nd OS (dual boot) and attempting to play it? Sure, you'll likely use up 20-30 gigs of space just to play a game, but that's not so bad a compromise if you're actually able to enjoy it, is it?
i am not sure what is really going on, but when i set it to specific resolution it works, but then quits after a while. I got it to work, played for hour or so then got a CTD then it would not load, when it douse load i get missing meshes everywhere, i don't know if it is the computer, or the game. My computer douse not overheat or anything and i think it has plenty of power to run the game but for some reason i am still getting 20 FPS while running, and less then 20 on boss battles ... oh well ...
At what resolution and detail level are you attempting to play it? Specifics might help people more.
From a hardware standpoint, that Antec PSU should be enough to power your system adequately, despite having to use a MOLEX-to-6pin PCI-E adapter to connect the 4890. You've got MORE than the recommended hardware reqs, and the system performs admirably in other titles. So...
My best guess is that the problem is software related, either with the game and/or it's mods, drivers, Direct X, or the OS itself.
The closest I could come to trying to replicate the problem myself was installing it under the XP OS of my dual-boot Win7 / XP machine:
AMD 7850 Kuma @ 3.2GHz
HD 4850 @ 700/1100
Antec Earthwatts EA430 PSU
1600 x 900 resolution
Windows XP SP3
I didn't play long, only through the opening tunnels and stuff, but I had no troubles running the game at max detail. This was of course a stock install - no mods.