Hello everyone,
Recently i installed Windows 7 Ultimate x64 on my computer and decided to play Oblivion again. I installed the game and decided to play.
When i go to the menu,there's no music.Sometimes, voices can't be heard,and when I try to talk to someone, fraps greatly slow down.
When i have Microsoft Xp,it run perfect.
A detail:I've recently installed a ram module. Now i have 6 GB of RAM.
Any solutions?

Check your speaker configuration, in both the control panel, and the ingame settings. (i think there is one there.) and make sure the settings match what you actually have. (if all you have is stereo... two speakers, setting your sound to 2.1 will lose you a bunch.)

No sound in menu's is probably a codec issue, verify speaker settings first, if those are good, try installing the klite basic codec pack, make sure it is set to repair broken codecs, and that ffdshow is configured to ignore oblivion, both audio, and video. May also take care of your slowdown in dialog.

If you have a 64 bit operating system, you should also install the Large Address Aware patch. (check the oblivion, and memory usage thread for a link, and instructions.)

I tried to unistall and reinstall some codecs...and it worked!All my problems were solved!
Many thanks.