Motherboard or iGPU defect?

Tim Van Horebeek

Honorable
Mar 24, 2013
3
0
10,510
Hi guys i have a MSI H61M-P31/W8 with an Intel Core i3-3220, s1155. when i power the computer on I got 1 long beep and 2 shorts beeps.

I googled this and this is relevant to a graphics problem, because i'm using the iGPU from the CPU. I putted a Graphics Card in and the computers works.

My question now is, how can i determind what is broken? is my Motherboard broken? or my CPU which is my iGPU?

please help me with this question