I'm having the hard time with my laptop that I...

Question

Is it normal that the webcam of this laptop (1001 TU) is so dark?
sometimes only the light can be seen but still it was so dark
eventhough I already adjust the settings. and one time its just black
and white and blurred picture or video? Everytime I used the microphone
when I chat, they can't hear me even a single noise. but I can hear it
just so hard for me to understand because the sound was so soft even
the sound is already at a maximum level. the battery was easily been
heated and drained even I just used it in a few hours. is that problem
normal with this laptop?i just buy this last saturday and the store
didn't want to entertain this problem they said that its normally like
that even they would change another one. is that true? thanks.. I
really need your help...and im thinking what if I just change the
model?or go to the hp directly? anyway just want to know which one is
better the acer aspire one? or the hp mini note 1001TU? thanks