Microsoft Life Cam VX-6000

I've been working on this problem now for a couple of days and getting tired of this topic. I have had this camera working before now not . It works in my scanners and camera it works in Windows Live. But I just get a black screen when I try and use it. Or Coloured lines in it.
I have all the up to date drivers, bios ,anti-virus free ,machine runs well.
I have been to many forums to do research and have tried some of them but still no effect.
I did find one website forum that explains my problem pretty close except for my computer doesn't say it can't detect camera.
This is a big problem and I'm not the only one.
I was hoping to find a registry fix but it does not apply to this problem.
Is there anyone out there knowledgable about this fix....
I think the problem has something to do with the usb supports and the lifecam software is getting duplicated or something a
I know nothing about usb support driver ect. ect.

 

Also there are no problems in device manager but there is a suspicious items in there
eg.Microsoft Lifecam#2 ???
There is also duplicates ofsis 7001 pci to usb and one ....., One Unknown device under systems

 

XP Home SP3

 

Also found a forum that people said there was a conflict with tuners but I'm pretty sure I don't have any tuners. It could be some driver or conflicting with it but I shut everything down and tried it and still no.

 

No. I'm sorry I misinformed you I have XP PRO. No I do not have any tuners I do have an application called free tv. But it is not running. I have been doing some mor research on this topic and i believe it might have something to do with lifecam.exe.