i have an emachine and i was putting in a network card to make it wireless to our network. so anyway i plugged everything back in and booted it up and it came on but nothing happened. It didnt load up the only thing it did was the lights on the key board and on the machine itself flashed on and off. then i took the card back out and then it booted up correctly. well then i tried to reinstall it to make sure i had a good connection in the slot. plugged everything back in and then the same thing happened nothign loaded up. so i took it back out and now nothing loads up so i dont kno wut i did.. cuz i didnt touch anything i did it just like i did with my computer and ti worked fine..anyone please help me please help me!!!