No wifi at all

[Petros.Polonos]

XO 1.5 S/N SHC005007ED
Build 860
Sugar 0.84.31
FW: Q3A62
Wireless FW: not available

Problem: no sign of a WiFi card (while it is present - I opened the case to check it).
Problem details: http://www.youtube.com/watch?v=MSG5PGCFNHo

Hope sb would help me.

Petros