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. It usually means that something shorted and PSU turned itself off. I tried to boot it for 2-3 times until I removed the wlan card. Now It boots and 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