Unknown Device Driver Constantly being installed!

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http://forum.xda-developers.com – Guys When I connect my phone to my computer it is constantly installing unknown device driver. Ive tried all my ports. Its a hit and miss with this thing. In a blue moon it will catch and recognize it as the samsung device. But it takes litterally hours of pulling out the battery, putting it indownload mode, uninstalling the "unknown device driver" Ive tried also updating the driver manually to the "Samsung Android USB Composite device" but it doesn't recognize it when I manually update it. The cable is brand new and it cost me like 20dollars and its worked in the past. (HowTos)