Cubase LE 4 and Tascam US-122 MKII Cracking & Popping Noise

It never made this noise before. But the other day, I was trying to get my microphone to record in stereo, so I switched up a bunch of things. Now I hear, an almost rythmic, popping sound. I just bought a new microphone and am anxious to use it. I’ve tried the control panel and used all latencies and nothing will work. Can someone please help me out here? It would be greatly appreciated.
(update) Tried upgrading the driver, to 2.3, I think, which blue screened my computer twice. So I downgraded the driver to 1.4, I believe. It aint crashing, but it also hasn’t fixed the crackling noise.