New hardware + New OS = Problems...
Remember Oblivion came out before Vista, probably not tested too much on
Vista either. Try the usual troubleshooting like Running in Compatibility
Mode, Running as Administrator, Running with UAC (User Account Control)
turned off, etc.
http://www.bethsoft.com/ is your friend, what better place than the guys who
made the game to get answers to [possibly] common questions?
Quick look came back with only 1 FAQ Question regarding Vista and
Oblivion...
http://support.bethsoft.com/asp/res...ndows+Vista&top=General+Information&rid=24845
Basically they state that Oblivion came out before Vista, ergo, no support.
They also note that Downloadable content is not compatible with Vista,
though they may just be talking about the 64-bit Vista.
Q: Is Oblivion supported on Windows Vista?
A: We do not formally support Vista as Oblivion is not a Games for Windows
title. Our internal tests -- and external tests done by outside parties --
have not found any issues with Oblivion on Vista. Should you have problems,
it's not something we support or can help you with. The secured installers
for downloadable Oblivion content are not compatible with 64-bit editions of
Microsoft Windows or any version of Windows Vista and therefore downloadable
content will not work with Oblivion.
not too helpful, I know, but you could ALWAYS run Virtual PC 2007, install
your old Windows XP copy into Vista. Your system seems beefy enough that I'm
sure Oblivion would run OK in a virtual enviornment (Oblivion runs great on
my system with all settings turned up, and i'm nowhere near at your level of
power). Good luck.