Hi Didier,This is not much help I know but I also suffered from the same problem with 3.8 and interestingly enough it was also a Foxconn board, this time however sporting a Athlon XP.
The only solution I found was to disconnect the speaker.Unfortunately the box is currently doing firewall / WiFi Access Point duties in an International Chess tournaments competitors LAN so can't provide a DMSEG or model number.
Regards Simon
