Hello there. I have MS lifecam 5000 version, and its kinda similar to 3000. never had any probs installing and it works a treat. What operating system to u use?? use cc cleaner first as there may be corrupt installation leftover files..then try to re-install again.....when u say nothing happens...do u just mean nothing happens on screen??.....let me know if u try what ive suggested and we'll take it from there.....also are all the 3 usb ports working when u use other items with them??