How do I know the motherboard is burnt?

8rolls

Honorable
Oct 2, 2013
2
0
10,510
Hi. I was installing the second hard drive. Now when I turn the computer on nothing comes up. Power supply is fine. No sounds made by bios. I noticed that the power cord that was going to the second hard drive was not completely in. Could that cause the motherboard burn? Thank you in advance.
 

ihog

Distinguished
Probably not. But if it's "burnt" you will see this type of stuff:

6530g.jpg