Posted 25 January 2008 - 04:42 PM
I thought you had already went to Start>Control panel and select Sounds and Audio Devices from my post #2. That gives you the system sound scheme that may be applied. Look on the Sound tab. The list is under Program Events.
Or, you could just select on the Sounds tab from the drop down menu to have No Sounds. If you still get the Critical Wave sound on reboot, then another program is initiating it.
Programs set to start on boot up are on the Start Tab. Click Start and then Run. Type in msconfig and click OK. Select Start tab. Will have to leave it up to you which program may be causing it. You could uncheck them all, reboot and see if the wave stopped. If it did, then you could add back one program at a time until wave appears.
Alternate method is to write down all programs that are set to start at boot up. Open them up one by one and check each and every Sound Option/Preferences that can be set.