Cant install drivers for smoothie after reinstall windows 7

Machine: custum

Board: c3dmini

Firmware: _Smoothie

Problem/ Question: had machine running on windows 7 but after a reinstall windows seems to not see my machine.
It just keep saying driver install failed.
Tried manual install of drivers (smoothiev1.1)
But i get an exclamation mark on device manager.
Thanks

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