Problem med WIFI

Verkar som om laptopen levereras med 4 olika modeller av wifi kort

Intel Centrino Ultimate-N 6300 (3 x 3):
Integrated support for 802.11a, b, g, and n6
3 transmit, 3 receive antennas
Up to 450 Mb/s data rate
Intel Centrino Advanced-N 6205 (2 x 2):
Integrated support for 802.11a, b, g, and n6
2 transmit, 2 receive antennas
Up to 300 Mb/s data rate
Broadcom 4313GN 802.11b/g/n WiFi adapter:
Integrated support for 802.11a, b, g, and n
1 transmit, 1 receive antenna
Up to 72 Mb/s data rate
Broadcom 43224AGN 802.11a/b/g/n (2 x 2) WiFi adapter:
Integrated support for 802.11 a, b, g, and n
Up to 300 Mb/s data rate

Googla olika kort och testa drivere för det.
Har du kollat device manager i windows, om du har några okända enheter där?