Lan Ethernet Card Link Down After 10 Secs

[Evilrude]

Hi guys, I am a bit newbie on pfsense and i really dont know is this the right place to start topic , sorry about it.

I got 3 Wan 1 Lan Ports

When i start Pfsense Pc , Lan Port Etnernet Card Link Turns Green (Its Up)

After 10 Seconds Its down, No Light Green Or Red Shows On Lan Ports Ethernet Card.

Is it Hardware or Driver Something problem ?