Overdubbing problem during mutitrack recording


I recently purchased a V8 sound card with the hope of improving my recordings’sound quality however, I am now finding it diffficult to do multitrack recordings. While I used to record by plugging my headsets to the PC, I never had issues but with the use of sound card, when I am recording a new track, the previous track records along with the new, which makes the new track to turn out with low amplitude and less audible while the prious track souns double.

I tried to uncheck overdubbling from preferences but that prevented me from hearing the previous track while recording the new one, hence the tracks are not syced.

I will sincerely appreciate all suggestions and advise to resolve this problem.