Help me my problem

[s0ft8e4rt]

Hello,
I have MSI MS-7260 Motherboard. There have no problem in last time but now she don't know my graphic card and does not show anything in my monitor. First I thought my graphic card is not working, so i buy the new one but she still give me same error, how can i do that? please help me. (my error is 1 long beep and 8 short beep)
thanks

 

[casualbuilder]

according to the beeps, it is either a 2nd faulty graphics card, or a faulty motherboard.