Hi Herve, I now moved my WiFi Card from WLAN slot to 1/2MINI Labelled slot it seems to be working okay so far. I have two E6230 laptops and I experienced the same WiFi issues on both, After changing the Mini-PCIe slot, they both seem to be working as expected. But could I request you keep this thread open for 1 more day to fully test this, please? I will send with error reporting files.