Finding unknown sounds on Win XP
Don't know if you are still looking for a fix to the unknown sound, but here's some help...
I just inherited my husband's windows XP machine & it had an unknown sound, too... when I opened up some web pages, what sounded like a loud water drop would happen, sometimes just once & sometimes it would happen a few times in a row. Very annoying! I couldn't find the offending .wav file by going to start>control panel>sounds>sounds & audio devices> & then checking every sound file there. So here's what I did...
Start>search>all files & folders>
In the box "All or part of the file name", type .wav
Make sure you are going to be searching your "C" drive
At the bottom of this menu, click on "MORE ADVANCED OPTIONS"
Make sure that "Search system folders", "Search hidden files & folders",
And "Search subfolders" are all CHECKED.
When I did this, my system came up with over 1100 files. Determined to get rid of this sound, I started at the top of the list & listened to each one. Luckily, I only had to hear about 100 of them before I found my offender. As soon as I found it, I deleted it & now I don't hear it anymore!
If the sound on your machine isn't a .wav file, you'll have to repeat this search using a different file extension, like .mp3 or whatever. Just make sure you are telling the system to search hidden files/folders... that's where mine was found. Hope that helps..
Viksyn