Sound bug Options

[Lopov]

I have an odd issue appearing in Oblivion since today and so far no luck with any solutions. I use the Alt + W combination for running but when I hold Alt, I hear that type of sound in my game that normally occurs in Windows e.g. if you're looking for some word with the CTRL+F command and end up with no results. So this sound appears each time I click on Alt and it doesn't go away until game eventually freezes for a few seconds.

I tested Alt + W in Skyrim and in Fallout, I use the same combination for running, and pressing Alt there doesn't produce any windows-related sounds. If I change Alt for another command in OB, it works fine, but if I press Alt for some reason, even if it's not assigned to any command, I hear this sound too. If I press Alt in the main menu, I don't hear it, though.

Any ideas?

EDIT: Sticky keys are disabled.

This post has been edited by Lopov: Feb 11 2016, 09:22 PM