Arduino uno clone Pb driver installation

Hi,

I've received my DCcduino uno but my board was not recognized by win7.
I've tried a lot of driver for CH340G chipset.
Have you a solution?

Is the chip nearest the USB connector marked CH340G (with a stylized WCH - that’s the company logo - in front of it)? Or is it some other kind of serial adapter - always doublecheck this.

Have you run the CH341SER.exe driver installer?

Is anything shown in device manager when you plug it in? Yellow triangle? What does it say?

Hi,

Yes i've launched the installer with this message "pre-installation successuful".
But When I connect the board into USB port, nothing , no unknown peripheral detected, no new COM port.

The board is running, LED blink.