Webcam Software Malfunction

Hey there,

I got my Dell XPS L502X a couple of days ago and was playing around with the webcam, taking silly pictures etc. I didn't like the few color correction possibilities in Dell Webcam Central, so I downloaded a trial version of YouCam 5 since it has more setting options for the picture (sharpness, saturation etc.) Then suddenly my webcam turned really dark, and I thought I accidentally moved the brightness arrow in the settings,  but the settings themselves were all messed up; instead of the interval -5 to 5 (or whatever the original setting was; something NORMAL), I could only choose between -11 and -3. I changed the settings so that if I would point my desk lamp straight to my face it would look acceptable, but that's just a temporary solution. I just want it to be the original settings again. I already deinstalled the webcam twice and my laptop installed the original drivers itself, but it just stayed the same. I tried to fix the colors and brightness working with both programms (Dell Webcam Central and YouCam 5), but it didn't work. I deinstalled YouCam, maybe it would miraculously solve the problem I thought, nope of course it did not.

Any further suggestions?

Thanks for every advice! :)