I have two logitech A-0234A microphones, one of them I used for a couple days on my computer and it worked completely fine. I used it successfully less then 2 hours before it stopped working. When I tried using it again it didn't even get recognized in my computer. I tried unplugging it and replugging it, and restarting my computer multiple times. Then I took out the 1st mic and tried using the 2nd mic, but that one didn't even work at all.
Studio XPS Laptop 1340
Windows Vista 32-bit
(Not sure what other system info you might want so I'll edit it when I find out)