Is my motherboard broken?

[Kermakakku]

I did a pretty bad mistake and put a wlan card wrong way around. It was Anatel WN5301A. I put it in the right slot (PCI) I managed to put it wrong way around. My PC booted for 1 second and then shut down. I removed the wlan card and now I dont get any display. I tried onboard graphics, 2 other graphics cards but nothing. Tried reseating RAM. Fans, hard drive leds etc. work so its getting power. The cables were fine. Should I replace my motherboard? Could it have damaged my other hardware?
My motherboard is Asus M5A78L-M LX3
Power supply: Cooler Master GX 750W

 

[Ketchup]

Do you have a speaker on the board so that you can hear the beep code? I am a little surprised it won't boot at all. Being a PCI slot, I can see it damaging the south bridge, but it would be possible the upper levels of the board survived. I suppose the amount of time the electrical short lasted would dictate how for it spread.

A beep could help here.

 

[Kermakakku]

Do you have a speaker on the board so that you can hear the beep code? I am a little surprised it won't boot at all. Being a PCI slot, I can see it damaging the south bridge, but it would be possible the upper levels of the board survived. I suppose the amount of time the electrical short lasted would dictate how for it spread.

A beep could help here.

I have a internal speaker but I dont have a slot for it. And no speaker in the motherboard. The PC boots but doesnt give any display. I tried to boot it for 2-3 times and the power supply turned itself off until I toke the wlan card off.