Ive got a pretty big noise problem with my system right now. Before installing my carputer everything was crystal clear as far as noise is concerned. But now that i installed it, when im using the puter i get an very very loud humming noise which is definetly coming from the carputer. im asssuming its from inteference with something else.

After looking at several posts on here it seems like the best solution is to buy a USB external sound card.

my current power setup is a regualr ac-dc atx power supply and a 700 watt invertor. could my problem be a poor ground on the invertor? im a little lost looking for suggestions