Make 4 EzCap work in just one PC

[iPcc]

Hi, does anyone have any idea on how to set-up four EzCap 108 in one PC for security surveillance purposes? I have 4 Ezcap and only 2 pcs works at a time. The other two just won't show the video and causes the Blue Screen of Death in my Windows 7.

I am also having trouble with setting up the drivers as Windows 7 auto-detect and auto-install the drivers. The "USB composite device's" driver will not uninstall and it just shows the Blue Screen of Death whenever I try.